question

¹³¹ ??I ? ¹³¹ ??Xe + Radiation The radiation emitted is a) alpha b) beta c) gamma d) neutron

answer

b) beta

question

The product of beta decay for ?? ??Cr would be a) ?? ??Cr b) ?? ??Mn c) ?? ??Mn d) ?? ??Cr

answer

c) ?? ??Mn

question

Chlorine and fluorine are both halogens with chlorine right below fluorine on the periodic table. Which of the following molecules will have a central C with the most positive partial charge? a) CF? b) CH?F? c) CH?Cl? d) CCl?

answer

a) CF?

question

What is the name of [Cr(NH?)?(H?O)?]Cl?? a) triammineaquachromium(III) chloride b) triamminetriaquachromium(III) trichloride c) triamminetriaquachromium trichloride d) triamminetriaquachromium(III) chloride

answer

d) triamminetriaquachromium(III) chloride

question

During photosynthesis, chlorophyll (acting as a catalyst) utilizes light energy to make glucose. What are the products for the complete balanced equation for this reaction? 6CO? + 6H?O + light ? ??? a) C?H?O? + 6O? b) C?H??O? + 6O? c) C?H?O? + 6CO? d) C?H??O? + 6CO?

answer

b) C?H??O? + 6O?

question

Given the following balanced equation, what mass of O? (MW=32g/mol) is needed to react completely with 60g of ethane (MW=30g/mol)? 2C?H? + 7O? ? 4CO? + 6H?O a) 112g b) 224g c) 336g d) 448g

answer

b) 224g

question

What will be the decrease in freezing point when 0.2 mol of glucose is added to 2.0kg of water. Given: ?Tf= kfm and kf=1.8°C/m a) -1.8°C b) -0.36°C c) -0.20°C d) -0.18°C

answer

d) -0.18°C

question

If a diver had a balloon attached to his waist at sea level, 1 atm, what would happen to the balloon if he dove to a depth with a pressure of 2 atm? Assume no change in the water temperature a) the balloon will burst b) the volume of the balloon will decrease by one-half c) the volume of the balloon will decrease by 1/4 d) the volume of the balloon will increase 2 times

answer

b) the volume of the balloon will decrease by one-half

question

What is the pH of a solution with [OH?¹]= 1x10?¹¹? a) 11 b) 8 c) 3 d) 14

answer

c) 3

question

If you want to increase the kinetic energy of molecules initially at 20°C and a pressure of 1 atm, without changing the volume, you will a) increase the temp b) decrease the temp c) decrease the pressure d) double both the temp and pressure

answer

a) increase the temp

question

What is the hybridization of a molecule that possesses trigonal planar geometry? a) sp b) sp² c) sp³ d) sp?

answer

b) sp²

question

For a phase diagram, the point at which solid, liquid, and gas are in equilibrium is known as the a) critical point b) condensation point c) triple point d) mass equilibrium point

answer

c) triple point

question

Which of the following electronic configurations would exhibit the largest electron affinity? a) [Ar} (4s)² b) [He] (2s)² (2p)? c) [Xe] d) [Ne] (3s)¹

answer

b) [He] (2s)² (2p)?

question

What is the expression for the reaction quotient for the decomposition of N?O? === 4NO? + O? a) q= [N?O?]²/ [NO?]? [O?] b) q= [N?O?]/ [NO?][O?] c) q= [NO?][O?]/[N?O?] d) [NO?]? [O?]/[N?O?]²

answer

d) [NO?]? [O?]/[N?O?]²

question

Fatty acids are stored in adipose tissue as: a) phospholipids b) steroids c) triglycerides d) glycerine

answer

c) triglycerides

question

Polyunsaturated fatty acids have several of this type of covalent bond a) single b) double c) triple d) quadruple

answer

c) triple

question

A peptide bond is an example of a(n)______ (the chemical bond between two amino acids is a(n)_____) a) amide b) ester c) carboxylic acid d) ether

answer

a) amide

question

What product is formed when tert-butyl bromide reacts with water? a) sec-buranol b) isobutane c) isobutanol d) tert-butanol

answer

d) tert-butanol

question

Which of the following amino acid residues has a branched side chain? a) serine b) valine c) alanine d) glycine

answer

b) valine

question

How many nucleotides are used to code for an amino acid? a) 1 b) 2 c) 3 d) 4

answer

c) 3

question

The type of bond that hold double stranded DNA together is a) hydrogen bonds b) covalent bonds c) dipole-dipole interactions d) ionic bonds e) sugar-to-phosphate bonds

answer

a) hydrogen bonds

question

CH?(CH?)??COOH is the formula for a(n) a) saturated fatty acid b) unsaturated fatty acid c) glycerol d) steroid

answer

b) unsaturated fatty acid

question

Which of the following, in great concentration, will form a micelle? a) proteins b) sugars c) fatty acids d) nucleotides

answer

c) fatty acids

question

The oxidation of 1-proanol produces a) propane b) propanone c) propanoic acid d) 1,2-propanediol

answer

c) propanoic acid

question

Which molecule will hydrolize into a carboxylic acid and thiol? a) ether b) ester c) thioester d) amide

answer

c) thioester

question

What types of chemical reactions are used to describe how car engines use energy from gasoline? a) double displacement and decomposition b) precipitation and decomposition c) oxidation-reduction and combustion d) acid-base and hydrolysis

answer

c) oxidation-reduction and combustion

question

What type of reaction causes a pi bond to break into two sigma bonds? a) dehydration b) substitution c) addition d) elimination

answer

c) addition

question

What kind of hydrocarbon has the general formula CnH2n-2? a) alkane b) alkene c) alkyne d) aromatic

answer

c) alkyne

question

In 2-phenylethanol, the benzene ring is a) the most important functional group b) bonded to OH c) not the most important functional group d) non-aromatic

answer

c) not the most important functional group

question

The Watson & Crick model describes a) DNA b) RNA c) protein d) membranes

answer

a) DNA

question

What type of chemical reaction is used when HCl is added to the alcohol in step 2 of the sophmore organic lab synthetic sequence? a) addition b) substitution c) elimination d) dehydration

answer

b) substitution

question

What water soluble compound will from when NaHCO? reacts with ibuprofen? a) an alcohol b) a chloride c) a Grignard d) a salt

answer

d) a salt

question

Which reagent(s) can accomplish the same reduction as that shown in Figure 3 with NaBH?? a) H?/ Raney Ni b) Mg c) CO?/HCl d) PCC

answer

a) H?/ Raney Ni

question

A Grignard reagent acts as a(n) a) electrophile b) nucleophile c) acid d) solvent

answer

b) nucleophile

question

What is the principle reason for the large difference between pKa1 and pKa2? a) H?Po?¹? is a much weaker acid than is H?PO? as it is much more difficult to remove a proton from an anion than from a neutral molecule b) salts make better acids than do neutral molecules c) Ka1 is much smaller than Ka2 d) the greater electronegativity of anions is the most significant contributing factor

answer

a) H?Po?¹? is a much weaker acid than is H?PO? as it is much more difficult to remove a proton from an anion than from a neutral molecule

question

What is the electronic configuration for the metal ion involved in the reaction of calcium phosphate with sulfuric acid? a) [Ar] (4s)² b) [Ar] (4s)² (2p)² c) [Ar] d) [Ar] (4s)²(2p)?

answer

c) [Ar]

question

What would be the pH for a buffer made by dissolving 12.0g of NaH?PO? in enough water to yield one liter of solution. AW's: Na=23, H=1, P=31, O=16 a) 9.20 b) 8.20 c) 7.20 d) 6.20

answer

d) 6.20

question

What is the name of H?PO?¹?? a) hydrogen phosphate b) dihydrogen phosphide c) dihydrogen phosphate d) dihydrogen monophosphate

answer

c) dihydrogen phosphate

question

What is the product of benzene heated with nitric and sulfuric acid? a) benzenesulfonic acid b) nitrobenzene c) aniline d) anisole

answer

b) nitrobenzene

question

HCl + H?O ? H?O¹? + Cl¹? Which is the conjugate base of HCl? a) H2O b) H3O¹? c) Cl¹? d) h2cl¹?

answer

c) Cl¹?

question

Which of the following dissolves in benzene but not in water? a) acetic acid b) sodium acetate c) ammonia d) ethylene glycol

answer

d) ethylene glycol

question

Which of the following scenarios describes a combustion reaction? a) snow melting when treated with salt b) the endothermic solution of ammonium nitrate in water c) wood burning d) TNT exploding

answer

c) wood burning

question

The peptide bond between two amino acids in a protein is what type of bond? a) hydrogen b) covalent c) ionic d) amide

answer

d) amide

question

If for a gas both its volume and temperature are doubled, how is its pressure affected? a) quadrupled b) halved c) unchanged d) quartered

answer

c) unchanged

question

At equilibrium the concentration of an acid (HA) and its respective ions (H? and A?) are found to be 1M, 0.01M, and 0.01M. What is the value of the acids ionization constant? a) 10? b) 1 c) 10?² d) 10??

answer

d) 10??

question

In BF? what is the angle of the F-B-F bond? a) 109° b) 90° c) 120° d) 104°

answer

c) 120°

question

Which of the following is non-aromatic? a) benzene b) cyclohexene c) toluene d) naphthalene

answer

b) cyclohexene

question

What is the oxidation number of Tc in NH4TcO4? a) 0 b) -1 c) +7 d) +8

answer

c) +7

question

What is the electronic configuration of technitium (Z=43)? a) [Kr] (4s)²(3d)? b) [Kr] (3d)? c) [Kr] (4d)? d) [Kr] (5s)²(4d)?

answer

d) [Kr] (5s)²(4d)?

question

Which of the following equations describes the reaction by which Tc-101 is likely to decay? a) ¹?¹ ??Tc ? ¹?¹ ??Ru + ?-1 b) ¹? ??Tc + ? -1e --- ¹?¹ ??Mo

answer

a) ¹?¹ ??Tc ? ¹?¹ ??Ru + ?-1

question

Which of the following equations describes the reaction by which Tc-97 is likely to decay? a) ¹?¹ ??Tc ? ¹?¹ ??Ru + ?-1 b) ¹? ??Tc + ? -1e --- ¹?¹ ??Mo

answer

b) ¹? ??Tc + ? -1e --- ¹?¹ ??Mo

question

Which solvent is better to dissolve all the choline? a) hexane b) toluene c) methanol d) chloroform

answer

c) methanol

question

The beta decay of ¹?C will produce a) ¹?N b) ¹?Be c) ¹?B d) ¹¹Be

answer

a) ¹?N

question

Why does reaction with iodoacetate introduce new negative charges into a protein? a) the iodide ion is negatively charged b) S attracts electrons and becomes negatively charged c) the new carboxylic acid group in the S-carboxymethyl derivative of cysteine will ionize to a negative carboxylate ion

answer

c) the new carboxylic acid group in the S-carboxymethyl derivative of cysteine will ionize to a negative carboxylate ion

question

Which of the following reagents will oxidize alcohols? a) LiAlH4 b) NaBH4 c) h2crO4 d) ZnHg

answer

c) H2CrO4

question

Which of the following is an Arrhenius acid? a) RbOH b) BF3 c) NH3 d) HF

answer

d) HF

question

According to the kinetic-molecular theory, if the volume of a gas doubles the temperature must have a) doubled b) beed reduced by half c) remained unchanged d) decreased exponentially

answer

a) doubled

question

A solution of acetic acid and sodium acetate has a higher pH than would the acetic acid alone. This is due to a a) solubility product equilibrium b) common ion effect c) fractional precipitation reaction d) partial ionization of a weak acid in water

answer

b) common ion effect

question

Which of the following is not an intermolecular attraction? a) hydrogen bond b) van der waals force c) ionic bond d) dipole to dipole interaction

answer

c) ionic bond

question

Yttrium (with 39 protons) would exhibit what ionic charge? a) 2+ b) 3+ c) 2- d) 3-

answer

b) 3+

question

Which of the following would undergo hydrolysis the fastest? a) acetamide b) formamide c) methyl acetate d) t-butylpropionate

answer

c) methyl acetate

question

How many grams of CaCO3 are needed to produce 1 mole of CO2 via the reaction below? AW's: Ca=40, C=12, O=16 CaCO3(s) ? CaO(s) + CO2(g) a) 100 b) 68 c) 44 d) 1

answer

a) 100

question

Which of the following has the greatest dipole moment? a) NH3 b) H2O c) HF d) HCl

answer

c) HF

question

Since strontium is in group II and Oxygen is in group VI (16), what would be the formula for strontium oxide? a) Sr2O b) SrO2 c) Sr2O2 D) SrO

answer

D) SrO

question

A peptide bond is an example of a _________ linkage a) amide b) ester c) acid d) ether

answer

a) amide

question

Which of the following would have the lowest boiling point a) pentane b) proprionic acid c) 1-butanol d) t-butyl alcohol

answer

a) pentane

question

What is the product of the reaction of 2-methyl-2-pentene with HI a) 3-iodo-2-methylpentane b) 2-iodo-2-methylpentane c) 3-iodo-3-methylpentane d) 2-iodo-3-methylpentane

answer

b) 2-iodo-2-methylpentane

question

Why does one mole of NaCl dissolved in a liter of water have a lower freezing point than would one mole of glucose dissolved in a liter of water? a) The NaCl has a smaller molar mass b) The NaCl does not hydrogen bond c) The NaCl ionizes whereas the glucose does not d) The NaCl is more polar

answer

c) The NaCl ionizes whereas the glucose does not

question

The reaction between a carboxylic acid and a thiol (Hs-R') would yield a a) sulfide salt b) thiol ester c) non-reaction d) neutral solution

answer

b) thiol ester

question

A fat soluble vitamin that helps to mineralize bones is a) vitamin A b) vitamin B c) vitamin C d) vitamin D

answer

d) vitamin D

question

Fatty acids are stored in adipose tissue as a) phospholipids b) steroids c) triglycerides d) glycerine

answer

c) triglycerides

question

The movement of particles across a membrane against a concentration gradient is called a) simple diffusion b) facilitated diffusion c) active transport d) dispersion

answer

c) active transport

question

Amino acids, fatty acids, and other molecules that must be supplied in the diet as they are not synthesized by the body are called a) essential vitamins b) essential nutrients c) trace minerals d) basic foodstuff

answer

b) essential nutrients

question

The shape of the peptide bond in protein is a) similar to the glycosidic bonds in carbohydrates b) flat due to the partial double bonds joining C, O, and N c) trigonal coplanar centered on the carbon d) tetrahedral as are all four bond structures

answer

b) flat due to the partial double bonds joining C, O, and N

question

Atoms with a hybridization of sp2 exhibit what molecular geometry a) trigonal bipyramidal b) tetrahedral c) square planar d) trigonal planar

answer

d) trigonal planar

question

When ammonia acts as a lewis base it forms a bond by a) donating an electron pair b) accepting an electron pair c) yielding hydroxide ions d) accepting a proton

answer

a) donating an electron pair

question

Cu + AgNO3 ? CuNO3 + Ag Which metal is displaced in the above reaction a) Cu b) Ag c) NO3 d) none is displaced

answer

b) Ag

question

C6H12O6 + 6O2 ? 6CO2 + 6H2O The above is an example of what type of reaction a) double displacement b) precipitation c) acid-base d) oxidation-reduction

answer

d) oxidation-reduction

question

Which functional group cannot be produced from a carboxylic acid a) ester b) amide c) amine d) acid chloride

answer

c) amine

question

What type of bond distinguishes polyunsaturated acids from other fatty acids a) single b) double c) triple d) delta

answer

b) double

question

What is the maximum mass of H2O that can form when 4g of H2 reacts with 16g of O2 by the reaction shown below 2H2 + O2 ? 2H2O a) 18g b) 36g c) 54g d) 72g

answer

a) 18g

question

The boiling point of pure water is lower at higher altitudes due to a) lower temperatures b) increased hydrogen bonding of water c) common ion effect d) lower atmospheric pressure

answer

d) lower atmospheric pressure

question

The Ksp value of CdCO3 is 1x10?¹². In a saturated aqueous solution of this salt what would be the molar concentrations of Cd²? and CO3²? a) each would be 1x10?¹² b) each would be 1x10?? c) each would be zero d) each would be 0.5x10??

answer

b) each would be 1x10??

question

Which equilibrium constant best fits the following reaction? Ag¹? (aq) + Cl¹? ? AgCl(?) a) Kc b) Ka c) Ksp d) Kp

answer

c) Ksp

question

Which explains the formation of BaF2 a) one Ba and two F atoms share a total of four electrons b) each F atom receives one electron from Ba, which gives up two electrons total c) Ba becomes 2+ by accepting two electrons from the two F's ( one from each F) d) Ba loses 4 electrons to form two bonds to the two F's

answer

b) each F atom receives one electron from Ba, which gives up two electrons total

question

Based on the pK values given below, which is the weakest acid a) HCl ( pKa= -2.2) b) HF ( pKa= 3.17) c) HCN (pKa= 9.22) d) CH3COOH ( pKa= 4.74)

answer

c) HCN (pKa= 9.22)

question

A student claculated the freezing point for a 1m KCl solution to be -1.86°C. The actual freezing point is -3.45°C for a 1m KCl solution. What was the source of the student's error a) the student forgot to convert molality (m) to molarity (M) in the calculation b) the student forgot to convert celsius to Kelvins in the calculation c) the student forgot to take into account the significant ionization of NaCl

answer

c) the student forgot to take into account the significant ionization of NaCl

question

Which of the following electronic configurations would correspond to the atom with the highest electron affinity a) [He] (2s)2 (2p)5 b) [Ne] (2s)2 (3p)4 c) [Ar] (4s)2 (3d)10 (4p)3 d) [Ar] (4s)2

answer

a) [He] (2s)2 (2p)5

question

N2 + 3H2 ? 2NH3 The equilibrium expression for the above reaction is a) K= [N2] [H2]3/[NH3]2 b) K= [N2] [3H2]/[2NH3] c) K= [2NH3] / [N2][3H2] d) K= [NH3]2 / [N2] [H2]3

answer

d) K= [NH3]2 / [N2] [H2]3

question

Which of the following is an example of oxidation a) treatment of toluene with KMnO4 to yield benzoic acid b) hydrogenation of a double bond c) dehydration of an alcohol d) addition of HBr to a double bond

answer

a) treatment of toluene with KMnO4 to yield benzoic acid

question

A radical is defined as an atom, molecule, or ion that has a(n) a) negative charge b) positive charge c) lone pair of electrons d) unpaired electrons

answer

d) unpaired electrons

question

CH2O is a(n) ________ form of carbon monoxide a) oxidized b) reduced c) hydrolyzed d) hydrated

answer

b) reduced

question

The conversion of CH3OH to CH2O is the result of a(n) _____ reaction a) oxidation b) reduction c) hydrolysis d) hydration

answer

a) oxidation

question

Which molecule will have a higher boiling point than CH3CH2CH2CH2OH a) CH3CH2CH2OCH3 b) HOCH2CH2CH2CH2OH c) CH3CH2CH2CH3 d) CH3CH2CH2CH2SH

answer

b) HOCH2CH2CH2CH2OH

question

Fluorine is more electronegative than chlorine. In which of the following molecules does C have the greatest positive charge a) CH2Cl2 b) CH2F2 c) CCl4 d) CF4

answer

d) CF4

question

Which hybridization results in an atom with trigonal planar shape a) sp b) sp2 c) sp3 d) sp3d2

answer

b) sp2

question

The hybridization of each of the two atoms make an imine functional group is a) sp3 and sp3 b) sp2 and sp2 c) sp and sp d) sp2 and sp

answer

b) sp2 and sp2

question

Which molecule has atoms with orbitals that are sp2, s and p a) CH3CH3 b) CH2CH2 c) HCCH d) CH2CHCH3

answer

b) CH2CH2

question

The oxidation of 1-butanol produces a) butane b) butanone c) butanoic acid d) 1,2-butanediol

answer

c) butanoic acid

question

Which molecule hydrolyze into a carboxylic acid and a thiol a) ether b) ester c) thioester d) thioamide

answer

c) thioester

question

The anti-Markovnikov hydration of a terminal alkyne produces what functional group a) aldehyde b) ketone c) alcohol d) alkene

answer

a) aldehyde

question

A peptide bond is an example of a(n) a) amide b) ester c) carboxylic acid d) ether

answer

a) amide

question

The combustion of gasoline is an example of what type of reaction a) double displacement b) precipitation c) acid-base d) oxidation-reduction

answer

d) oxidation-reduction

question

When the following portion of a strand of DNA ( GAGTACGGAC) is replicated as mRNA it will read a) CUCAUGCCUG b) CTCATGCCTG c) AGACGUAAGU d) AGACGTAAGT

answer

a) CUCAUGCCUG

question

HMG-CoA reductase inhibitors are used to a) raise cholesterol b) raise LDL c) lower cholesterol d) lower sugar

answer

c) lower cholesterol

question

A micelle is likely formed from a) proteins b) sugars c) nucleotides d) fatty acids

answer

d) fatty acids

question

In terms of molar solubility (X), the Ksp expression for Ca3(PO4)2 is a) (3X)3(2X)2 b) (X)3(X)2 c) (3X)3(2X)2/X d) (3X)(2X)

answer

a) (3X)3(2X)2

question

CH3(CH2)14COOH is the formula for a(n) a) unsaturated fatty acid b) saturated fatty acid c) glycerol d) steroid

answer

b) saturated fatty acid

question

What type of emission is produced in the decay shown below ¹³??I ? ¹³¹??Xe a) positron b) alpha c) beta d) gamma

answer

c) beta

question

The coefficient when the equation below is correctly balanced are ___Al(OH)3 + ____HCl ? ____AlCl3 + _____H2O a) 1:3:1:3 b) 1:3:1:2 c) 3:3:3:1 d) 2:6:2:3

answer

a) 1:3:1:3

question

The electronic configuration of the atom with the highest electron affinity is a) [Ar]4s2 b) [Ne]3s²3p? c) [Ar]4s²3d¹?4p³ d) [He]2s²2p?

answer

d) [He]2s²2p?

question

Trans alkenes tend to have higher melting points than cis alkenes due to their a) polarity b) shape c) hybridization d) charges

answer

b) shape

question

Which explains the formation of BaF2 best a) one Ba and two F atoms share a total of 4 electrons b) each F atom receives one electron from Ba, which gives up 2 electrons c) each F atom gives up one electron to Ba, which receives a total of 2 electrons d) electrons are transferred from F to Ba

answer

b) each F atom receives one electron from Ba, which gives up 2 electrons

question

The following equation describing the wave nature of the electron was postulated by ?x.?(mv)?h a) schrondinger b) pauling c) deBroglie d) heisenberg

answer

c) deBroglie

question

The beta emission of ????Cr would produce which isotope a) ?¹??Ti b) ????V c) ????Cr d) ????Mn

answer

d) ????Mn

question

How many nucleotides make an amino acid a) 1 b) 2 c) 3 d) 4

answer

c) 3

question

What type of bond distinguishes polyunsaturated fatty acids from other fatty acids a) single b) double c) triple d) quadruple

answer

b) double

question

The temperature at which the solid, liquid, and gas state can coexist is called the a) sublimation point b) phase equivalence point c) critical point d) triple point

answer

d) triple point

question

A occupies a volume of 1000mL at 40°C and 760 torr. What pressure would this gas exert at 40°C if the volume were reduced to 500mL a) 380 torr b) 1520 torr c) 760 torr d) 190 torr

answer

b) 1520 torr

question

What volume must 50mL of a 3.5 M NaCl solution be diluted to in order to yield a solution that is 2.0M NaCl a) 28.6 mL b) 78.6 mL c) 87.5 mL d) 137.5 mL

answer

c) 87.5 mL

question

Which of the following is an arrhenius acid a) RbOH b) BF3 c) NH3 d) HF

answer

d) HF

question

The molecule/ion that exhibits 2 resonance structures only is a) CO3²? b) PO?³? c) O3 d) NO??

answer

c) O3

question

The expression to calculate the number of grams of CO2 (M.W. 44) produced from 1g of propanol (M.W. 60) according to the following balanced equation is C3H7OH + 4.5 O2 ? 3 CO2 + 4 H2O a) 1x3x44/60 b) 60x3x44x1 c) 60x44/1x3 d) 1x60x3/44

answer

a) 1x3x44/60

question

In the molecule 2-phenylethanol, the benzene ring is a) the most important functional group b) not the most important functional group c) not present d) bonded to OH

answer

b) not the most important functional group

question

The dehydration of ethanol produces a) CH3OCH3 b) CH3CH3 c) CH2CH2 d) HCCH

answer

c) CH2CH2

question

What type of reaction causes a pi bond to break into two sigma bonds a) dehydration b) substitution c) addition d) elimination

answer

c) addition

question

Which of the following exhibits a tetrahedral molecular geometry a) SF4 b) NH3 c) CF4 d) CH2O

answer

c) CF4

question

Which of the following would exhibit the highest boiling point a) CH3OH b) CH3CH2OH c) CH3CH2CH2OH d) CH3CH2CH2CH2OH

answer

d) CH3CH2CH2CH2OH

question

The Ksp value for MX is 1.4x10?¹². What will be the concentration of the cation (M?) in a saturated aqueous solution for this salt a) 1x10?? b) 1.2x10?²? c) 1.2x10?? d) 1.2x10?¹²

answer

c) 1.2x10??

question

How many unpaired electrons would an atom have whose electronic configuration was [Ar] (4s)²(3d)? a) 7 b) 5 c) 3 d) 1

answer

b) 5

question

For elements positioned in the same row, the element with the greatest first ionization energy would be a(n) a) chlcogen b) halogen c) alkali metal d) noble gas

answer

d) noble gas

question

Which of the following R groups could lead to an IP of 9.7 a) -CH2COOH b) -CH2OH c) -(CH2)4-NH2 d) -CH2-SH

answer

c) -(CH2)4-NH2

question

A mixture of three amino acids whose respective isoelectric points are 8.8, 6.4, and 2.8 are to be separated by electrophoresis. Which of the following pHs for the buffered solvent would be the most suitable for this separation a) 4.0 b) 6.5 c) 7.6 d) 9.0

answer

b) 6.5

question

An amino acid whose IP is very close to that of the pH for the buffered solvent would experience what movement during electrophoresis a) very little movement at all b) half of the respective amino acid molecules moving toward the positive pole while the other half of the molecules moved toward the negative pole c) pronounced movement toward the positive pole d) pronounced movement toward the negative pole

answer

a) very little movement at all

question

Which of the following reagents will oxidize alcohols a) LiAlH4 b) NaBH4 c) H2CrO4 d) ZnHg

answer

c) H2CrO4

question

According to the kinetic-molecular theory, if the volume of a gas doubles the temperature must have a) doubled b) been reduced by half c) remained unchanged d) decreased exponentially

answer

a) doubled

question

Which of the following is not an intermolecular attraction a) hydrogen bond b) van der waals force c) ionic bond d) dipole to dipole interaction

answer

c) ionic bond

question

Yttrium ( with 39 protons) would exhibit what ionic charge a) 2+ b) 3+ c) 2- d) 3-

answer

b) 3+

question

Which of the following would undergo hydrolysis the fastest a) acetamide b) formamide c) methyl acetate d) t-butylpropionate

answer

c) methyl acetate

question

How many grams of CaCO3 are needed to produce 1 mole of CO2 via the reaction below? AW's: Ca=40, C= 12, O=16 CaCO3 (s) ? CaO (s) + CO2 (g) a) 100 b) 68 c) 44 d) 1

answer

a) 100

question

Which of the following has the greatest dipole moment a) NH3 b) H2O c) HF d) HCl

answer

c) HF

question

Since strontium is in group II and oxygen is in group VI, what would be the formula for strontium oxide a) Sr2O b) SrO2 c) Sr2O2 d) SrO

answer

d) SrO

question

A peptide bond is an example of a(n) _______ linkage a) amide b) ester c) acid d) ether

answer

a) amide

question

Why does one mole of NaCl dissolved in a liter of water have a lower freezing point than would one mole of glucose dissolved in a liter of water a) the NaCl has a smaller molar mass b) the NaCl does not hydrogen bond c) the NaCl ionizes whereas the glucose does not d) the NaCl is more polar

answer

c) the NaCl ionizes whereas the glucose does not

question

The reaction between a carboxylic acid and a thiol would yield a a) sulfide salt b) thiol ester c) non-reaction d) neutral solution

answer

b) thiol ester

question

List the following in order of increasing carbon to carbon bond length 1) -C?C- 2) >C=C< 3) ?C-C? a) 321 b) 132 c) 231 d) 123

answer

d) 123

question

The shape of the peptide bond in proteins is a) similar to the glycosidic bonds in carbohydrates b) flat due to the partial double bonds joining C, O, and N c) trigonal coplanar centered on the carbon d) tetrahedral as are all four bond structures

answer

b) flat due to the partial double bonds joining C, O, and N

question

Atoms with a hybridization of sp2 exhibit what molecular geometry a) trigonal bipyramidal b) tetrahedral c) square planar d) trigonal planar

answer

d) trigonal planar

question

Cu + AgNO3 ? CuNO3 + Ag Which metal is displaced in the above reaction a) Cu b) Ag c) NO3 d) none is displaced

answer

b) Ag

question

C6H12O6 + 6O2 ? 6CO2 + 6H2O The above is a example of what type of reaction a) double displacement b) precipitation c) acid-base d) oxidation-reduction

answer

d) oxidation-reduction

question

What type of bond distinguishes polyunsaturated acids from other fatty acids a) single b) double c) triple d) delta

answer

b) double

question

What is the maximum mass of H2O that can form when 4g of H2 reacts with 16g of O2 by the reaction show below 2 H2 + O2 ? 2 H2O a) 18g b) 36g c) 54g d) 72g

answer

a) 18g

question

The Ksp value of CdCO3 is 1x10?¹². In a saturated aqueous solution of this salt what would be the molar concentrations of Cd²? and CO?²? a) each would be 1x10?¹² b) each would be 1x10?? c) each would be zero d) each would be 0.5x10??

answer

b) each would be 1x10??

question

Which equilibrium constant best fits the following reaction Ag¹? (aq) + Cl¹? (aq) ? AgCl (?) a) Kc b) Ka c) Ksp d) Kp

answer

c) Ksp

question

Which explains the formation of BaF2 a) One Ba and 2 F atoms share a total of four electrons b) each F atom receives one electron from Ba, which gives up two electrons total c) Ba becomes 2+ by accepting two electrons from the 2 F's (one from each F) d) Ba loses 4 electrons to form two bonds to the two F's

answer

b) each F atom receives one electron from Ba, which gives up two electrons total

question

Based on the pK values given below, which is the weakest acid a) HCl (pKa= -2.2) b) HF (pKa= 3.17) c) HCN (pKa= 9.22) d) CH3COOH (pKa= 4.74)

answer

c) HCN (pKa= 9.22)

question

Which of the following is an example of oxidation a) treatment of toluene with KMnO4 to yield benzoic acid b) hydrogenation of a double bond c) dehydration of an alcohol d) addition of HBr to a double bond

answer

a) treatment of toluene with KMnO4 to yield benzoic acid

question

A radical is defined as an atom, molecule, or ion that has a(n) a) negative charge b) positive charge c) lone pair of electrons d) unpaired electron

answer

d) unpaired electron

question

CH2O is a(n) _____ form of carbon monoxide a) oxidized b) reduced c) hydrolyzed d) hydrated

answer

b) reduced

question

For the combustion of a hydrocarbon in sufficient air, the products are a) CO + H2O b) C + H2O c) CO2 + H2O d) CO2 + H2

answer

c) CO2 + H2O

question

When ²????Po loses an alpha particle which isotope is formed a) ²????Bi b) ²¹²??Rn c) ²????Pb d) ²????Pb

answer

c) ²????Pb

question

Cd²? + 2e? ? Cd E°= -0.40V Ag¹? + e? ? Ag E°= +0.80 What is the standard cell potential for the spontaneous reaction that would occur involving cadmium and silver and their respective ions a) -1.20 V b) -0.40 V c) +O.40 V d) +1.20 V

answer

d) +1.20 V

question

The weakest bond is the _______ bond a) ionic b) covalent c) hydrogen d) van der waal's

answer

d) van der waal's

question

Asparagine is classified as a polar amino acid. This classification is due to which specific group in asparagine a) carboxylic acid b) amine (amino group) c) amide d) alcohol

answer

c) amide

question

The atomic number and the mass number for each atom is conserved a) in both nuclear reactions and ordinary chemical reactions b) in nuclear reactions only c) in ordinary chemical reactions only d) neither in nuclear nor in ordinary chemical reactions

answer

c) in ordinary chemical reactions only

question

Atom #of p's # of n's A 7 7 B 7 9 C 6 7 D 8 8 Which two of the above atoms belong to the same element a) A and B b) A and C c) B and D d) C and D

answer

a) A and B

question

A substance exhibits a low melting point and has a very limited solubility in water. The bonds that are present in this substance are likely to be a) ionic b) polar covalent c) non-polar covalent d) alpha

answer

c) non-polar covalent

question

The density of a material is 2 g/cc. What would be the volume in cc of 12g of this material a) 6 b) 24 c) 0.17 d) 14

answer

a) 6

question

What volume of water must be added to 40mL of 6M HCl to yield a solution that is 2M in HCl a) 120 mL b) 40 mL c) 160 mL d) 80 mL

answer

d) 80 mL

question

What is the conjugate acid of ammonia (NH3) a) NH?¹? b) NH?¹? c) H?O ¹? d) OH¹?

answer

a) NH?¹?

question

Which of the following molecules is not a hydrogen bonder a) H2O b) NH3 c) HCl d) HF

answer

c) HCl

question

An electrophile is an a) electron pair donor and hence a lewis base b) electron pair acceptor and hence a lewis acid c) electron pair donor and hence a lewis acid d) electron pair acceptor and hence a lewis base

answer

b) electron pair acceptor and hence a lewis acid

question

AgCl would be best categorized as a) soluble in water b) insoluble in water c) unlikely to precipitate d) moderately soluble in water

answer

b) insoluble in water

question

The solubility of AgCl in water is a) 1.7x10?¹? b) 1.7x10?? c) 1.3x10?? d) 1.3x101.3x10?¹?

answer

c) 1.3x10??

question

Which one of the following cannot be synthesized from a carboxylic acid a) acyl chloride b) amide c) amine d) ester

answer

c) amine

question

Al³? + 3e? ? Al -1.66V I? + 2e? ? 2I¹? +0.54V What is the standard cell potential for the spontaneous reaction that would occur involving aluminum and iodine and their respective ions a) -2.20 V b) -1.12 V c) +1.12 V d) +2.20 V

answer

d) +2.20 V

question

A liquid is steadily heated until it reaches a temperature of 60°C. At that point the liquid begins to bubble and though heating is continued the temperature remains at 60°C. How is this explained a) the heat of evaporation has become endothermic b) while boiling occurs the added heat is consumed in breaking the intermolecular bonds that hold the liquid together c) the intermolecular attractions holding the liquid together grow weaker as the temperature increases d) the substance has found its triple point at 60°C

answer

c) the intermolecular attractions holding the liquid together grow weaker as the temperature increases

question

Which of the following is the correct equation for the decomposition of carbonic acid a) H2O + CO2 ? H2CO3 b) 2 HCl ? H2 + Cl2 c) HCO2H ? CO2 + H2 d) H2CO3 ? CO2 + H2O

answer

d) H2CO3 ? CO2 + H2O

question

Which of the following is not one of the factors which the collision theory considers to affect the rate of the reaction a) temperature b) oxidation number of the reactant c) concentration d) force of the collision

answer

b) oxidation number of the reactant

question

Which of the following would exhibit a hybridization of sp³d a) SF6 b) IF3 c) SO?²? d) XeF6

answer

b) IF3

question

What is the molar mass of a gas if a 4.9 g sample of the gas occupies a volume of two liters at a pressure of 1140 torr and a temperature of 25?C a) 30 g b) 40 g c) 60 g d) 80 g

answer

b) 40 g

question

C2H4 + 3O2 ? 2CO2 + 2H2O A 2.8 g sample of C2H4 is reacted with 8.0g of O2. After the reaction is over, 6.2g of CO2 is recovered. What was the percent yield of CO2 a) 35% b) 43% c) 70% d) 85%

answer

d) 85%

question

The use of fossil fuels may be causing the depletion of ________ gas in the upper atmosphere a) methane b) nitrogen c) ozone d) argon

answer

c) ozone

question

How many carbons are there in n-nonane a) 7 b) 8 c) 9 d) 10

answer

c) 9

question

Fe³?(aq) + SCN¹?(aq) ? FeSCN²?(aq) The addition of which of the following would shift the above equilibrium to the left a) Fe³? b) KSCN c) NaSCN d) AgNO3

answer

d) AgNO3

question

Which of the following is an arrhenius acid a) BF3 b) F2 c) HF d) NH3

answer

c) HF

question

What is the name of (CH3)2NH2Cl a) dimethylammonium chloride b) toluidine c) dimethylchloroammine d) methylammonium chloride

answer

a) dimethylammonium chloride

question

Terpenes are made of repeating ________ units a) amino acid b) fatty acid c) steroid d) isoprene

answer

d) isoprene

question

Of the following molecules, which would have the fastest effusion rate a) CH4 b) CCl4 c) SO2 d) SO3

answer

a) CH4

question

If a solution is 0.001 M in NaOH, what is its pH a) 3 b) 7 c) 11 d) 14

answer

c) 11

question

Which of the following elements has the largest first ionization energy a) Cl b) F c) N d) Na

answer

b) F

question

The acetate ion (CH3COO¹?) is found to be a weak base when dissolved in water. We can thus conclude that CH3COOH when dissolved in water will be a a) strong base b) weak base c) strong acid d) weak acid

answer

d) weak acid

question

Hydrochloric acid is a strong acid when dissolved in water. If HCl were dissolved in a solvent that was weaker base then water, which of the following could result a) HCl would become a strong acid and Cl? would be less inclined to behave as a base b) HCl would become a stronger acid and Cl? would be more inclined to behave as a base c) HCl would become a weaker acid and Cl? would be more inclined to behave as a base d) HCl would become a weaker acid and Cl? would be less inclined to behave as a base

answer

c) HCl would become a weaker acid and Cl? would be more inclined to behave as a base

question

The pKb for ammonia is 4.74. When dissolved in water the ammonium ion would behave as a a) strong base b) weak base c) strong acid d) weak acid

answer

d) weak acid

question

What is the formula of the conjugate acid for H2SO4 a) HSO?? b) H?SO?? c) HSO?? d) H?SO?

answer

b) H?SO??

question

What is the name of (NH4)3PO4 a) ammonium phosphite b) ammonium phosphate c) ammonium (III) phosphate d) ammonium phosphide

answer

b) ammonium phosphate

question

Which of the following molecules could act as either an acid or base a) NH3 b) H2PO?? c) CH3COOH d) CH3OH

answer

b) H2PO??

question

If 150 mL of 0.1 M HCl were mixed with 100 mL of 0.125 M NaOH what would be the pH of the resulting solution a) 1 b) 2 c) 3 d) 4

answer

b) 2

question

The equilibrium concentrations in the reaction below are [I?]= 1.0 M, [H?]= 1.0 M, [HI]= 2.0 M H? + I? ? 2 HI What is the equilibrium constant for this reaction a) 1 b) 2 c) 4 d) 8

answer

c) 4

question

Which will have the lowest boiling point, and why a) 1-iodopentane, stronger london forces b) 1-pentanol, stronger hydrogen bonds c) 1-fluoropentane, stronger hydrogen bonds d) pentane, weaker london forces

answer

d) pentane, weaker london forces

question

The pressure exerted by a certain amount of hydrogen gas could be calculated by using its density at a particular temperature. The units of density in this calculation would be a) g/mol b) g/L c) L/mol d) g/atm

answer

b) g/L

question

When plotting the boiling point temperature (°C) vs. increasing number of carbon atoms in various hydrocarbons, the slope of the graph is a) -60 b) -40 c) 0 d) 40

answer

d) 40

question

The smallest dipole among the bonds below is a) C-Cl b) C-O c) C-N d) C-C

answer

d) C-C

question

Which is the best substrate for an Sn2 reaction a) CH3-Br b) CH3-CH(Br)-CH3 c) CH3-CH(OH)-CH3 d) (CH3)3C-Br

answer

a) CH3-Br

question

What is the name of the following reacrion Cu + AgNO3 ? CuNO3 + Ag a) single displacement b) double displacement c) metathesis d) neutralization

answer

a) single displacement

question

CH3(CH2)14COOH is the formula for a(n) a) unsaturated fatty acid b) saturated fatty acid c) glycerol d) steroid

answer

b) saturated fatty acid

question

When an atom with the electronic structure show below forms an ion, it will likely 1s²2s²2p?3s²3p?4s² a) loose two 4s electrons b) gain two 4s electrons c) gain two 3d electrons d) lose two 1s electrons

answer

a) loose two 4s electrons

question

Which of the following has the highest boiling point a) n-butane b) isopentane c) neopentane d) n-pentane

answer

d) n-pentane

question

The theoretical yield of aspirin when a certain amount of salicylic acid reacts with acetic anhydride is 18.8 g. Given that the actual yield is 33%, how many grams of aspirin are produced a) 6.2 g b) 0.57g c) 62g d) 620g

answer

a) 6.2 g

question

Unsaturated fatty acids have one or multiple ______ bonds a) single b) double c) triple d) quadruple

answer

b) double

question

Which form of CO2 has higher entropy a) amorphous solid b) crystalline solid c) liquid d) gas

answer

d) gas

question

Rust is formed when atoms of ??Fe react with ¹?O according to the equation below 4 Fe + 3 O? ? 2 Fe?O? How many grams of Fe?O? are produced when 0.2 mol of Fe react a) 16 g b) 32g c) 64g d) 72g

answer

a) 16 g

question

Name [Cr(NH3)3(H2O)3]Cl3 a) triamminetriaquachromium(III) chloride b) triamminetriaquachromium(0) chloride c) triamminetriaquatrichlorochromium(III) d) triamminetriaquachromium(III) chlorite

answer

a) triamminetriaquachromium(III) chloride

question

Which of the following amino acids has a branched side chain a) serin b) leucine c) alanine d) glycine

answer

b) leucine

question

Which of the following is a fat-soluble vitamin a) B1 b) C c) D d) B6

answer

c) D

Chemistry – Chemistry Flashcards with Answers

Unlock all answers in this set

Haven't found what you were looking for?

Search for samples, answers to your questions and flashcards