Chemistry for Everyone: Exam 2 – Flashcards

Ammonia (NH3) boils at -33 degrees C, water boils at 100 degrees C and ethanol (CH3CH2OH) boils at 78 degrees C. What is the rank of intermolecular forces in these liquids from weakest to strongest?

All of the following are acids EXCEPT? a. HCl b. HNO3 c. Mg(OH)2 d. H3PO4

The second most abundant component of atmospheric air is...

For which of the following is hydrogen bonding NOT a factor? a. H2O b. NH3 c. CH4 d. CH3OH

In the reaction (Cu+) + Fe --> Cu + Fe2+ (Note: the reaction is not balanced)

The temperature at which a liquid becomes a gas is called the...

Which of the following compounds will NOT dissolve in water? a. CH3CH2CH2CH2CH3 b. CaCl2 c. CH3OH d. Na2SO4

Pentane has the formula CH3CH2CH2CH2CH3. What is the predominant intermolecular force between pentane molecules? (EN of C = 2.5, EN of H = 2.1)

Which of the following is the strongest intermolecular force? a. Dipole-dipole forces b. Dispersion forces c. Hydrogen bonds d. Ion-dipole forces

Earth's oceans cover approximately 75% of the planet's surface. These large bodies of water serve to moderate Earth's temperature due to what unique property of water...

What best classifies the attraction between an ion and water molecules?

Which of the following is NOT a definition of reduction? a. Reduction is the loss of oxygen from a substance b. Reduction is the addition of hydrogen to a substance c. Reduction is the loss of electrons from a substance d. Reduction is the gain of electrons by a substance

Considering intermolecular forces, which compound would have a higher boiling point, CH3CH2OH or CH3CH2CH3?

Solid water has a lower density than when it is in its liquid form. In other word, ice floats on water! This unique property is best attributed to...

A solution with [H3O]+ = 2.0 X 10^-9 M is...

According to the kinetic-molecular theory, gas molecules...

When an acid and base come into contact with each other the resultant reaction is called a neutralization reaction. What are the products of such a reaction?

In the neutralization reaction of Ca(OH)2 and HNO3, the products are water and...

Swamps and other stagnate bodies of water often have a bad smell to them, this is due to the breakdown of organic matter by what pathway?

A buffer...

Which layer of the earth's atmosphere contains nearly all living things?

The ozone hole over Antarctica has ___________ since 2006.

Hard water would most likely contain relatively large concentrations of...

In a redox reaction, oxidation occurs at the...

In which of the following unbalanced half-reactions is the reactant undergoing reduction? a. H2 --> H2O b. SiO2 --> SiF2 c. Zn --> Zn2+ d. C3H9 --> C3H7

Which of the following oxides (also called anhydrides) will give a basic solution in water? a. K2O b. CO c. SeO2 d. P2O5

In the neutralization reaction of NaOH by H2SO4, the products are water and...

Select the answer with the correct number of significant figures for the following: 0.326 - 19.56789 + 487.3 =

The boiling point of chlorobenzene is 131.70 degrees C. What is this temperature on the Kelvin scale?

Which of the following statements about ozone (O3) is correct? a. Ozone is important to life on earth b. Ozone is always a pollutant c. It is good for your health to breathe in ozone d. Ozone is not a pollutant anywhere in the atmosphere

Propane has the formula CH3CH2CH3. What is the predominate intermolecular force between propane molecules? (EN of C = 2.5, EN of H = 2.1)

Which of the following pure compounds would be capable of hydrogen bonding? a. NaCl b. PHCl2 c. NH3 d. C7H16

What is a Bronsted-Lowry base?

What is a Bronsted-Lowry acid?

Strong acids and bases do what in aqueous solutions?

What are the oxidation numbers for the metals in the equation below for a zinc/silver battery? 2 Ag(s) + ZnSO4(s) --> Zn(s) + Ag2SO4

How many individual molecules of AlCl3 are contained in 0.450 mols of AlCl3?

A sample of radon gas is contained in a 5.00 L vessel at a temperature of 28.1 degrees C and a pressure of 14.9 atm. Calculate the number of mols inside the vessel. (R = 0.0821 Lxatm/molxK)

A sample of gas in a balloon has an initial volume of 18.5 L at 18 degrees C. If the temperature of the balloon is decreased to -194 degrees C, what is the final volume of the balloon?

The density of N2 at STP is...

A substance that produces H+ in aqueous solutions

Has no definite volume and no definite shape

A substance that produces OH- in aqueous solutions

The term for when a gas becomes a liquid

The term for when a solid becomes a gas

As the pressure of an ideal gas increase, the volume will do what?

As the temperature of an ideal gas increases, the volume will

Radon gas is ____________

The most abundant gas in our atmosphere