Acids And Bases Answers Flashcard

In chemistry, when do we know a reaction is at equilibrium?
Equilibrium occurs when there is a constant ratio between the concentration of the reactants and the products.
Is lye an acid or a base?
base
Is sodium carbonate an acid or a base?
base
Is vinegar an acid or a base?
acid
Is citrus fruit an acid or a base?
acid
How do we read []?
concentration of
When magnesium or Ca reacts with sulfuric acid what are the two common products (they would both have it)?
water and hydrogen
What does acid produce in water?
H+ or H3O+
What is the concentration of hydronium in distelled water?
1.0 x 10^-7 M H30+
What is the concentration of hydroxide in distilled water?
1.0 x 10^-7 M OH-
Is an amphoteric compound an acid or a base?
It can be either.
Which is the acid in
HCL + H2O yields H3O+ + Cl- ?
HCl
Which is the base in
HCL + H2O yields H3O+ + Cl- ?
H2O
Which is the conjugate acid in
HCL + H2O yields H3O+ + Cl- ?
H3O+
Which is the conjugate base in
HCL + H2O yields H3O+ + Cl- ?
Cl-
Write the equilibrium equation that expresses the relationship of hydroxide and hydronium in solution?
[H3O+][OH-] = 1.0 x 10^-14
Write the equation you would use to determine the unknown’s concentration after a titration.
(C)a X (V)a = (C)b (V)b
What is the pH of a 10^-5 M solution of HCl?
5
What does blowing CO2 into water produce?
carbonic acid
How do acids taste?
tart, sour
When magnesium reacts with an acid what are the reactants?
Mg and H+ or H3O+
Is sodium hydroxide an acid or a base?
base
Is H2SO4 an acid or a base?
acid
What does pH stand for?
Power of Hydronium!
Write the formula for potassium hydroxide.
KOH
Is HF an acid or a base?
acid
What is the value of Kw?
1.0 x 10^-14
If the pH of a solution is 9 what is the hydronium concentration?
1.0 x 10^-9 M H3O+
If the hydronium ion concentration is 1.0 X 10^-4 M, what is the hydroxide concentration?
1.0 X 10^-10 M OH-
If the [OH-] is 1.0 X 10^-2, what is the [H3O+]?
1.0 X 10^-12 M H3O+
Hydrogen floride reacts with sodium hydroxide, what are the products?
NaF and H2O
What is the pH if the [OH-] is 1.0 x 10^-8?
6
About what is the pH of human blood?
7
Define a Bronsted-Lowry acid.
a substance that donates a proton to another substance.
What is the difference between a strong acid and a weak acid?
A strong acid completely dissociates in solution but a weak acid only partially dissociates.
What does dissociates mean?
A compound comes apart.
How can you make hydrogen?
Disolve a metal in acid.
Is ammonia an acid or a base?
base
Should you use vinegar or ammonia to get rid of mineral deposits in your shower? Why?
vinegar, because acids dissolve metals
Should you use vinegar or ammonia to clean a greasy stove top? Why?
ammonia, because bases react with oil
What is NH3?
ammonia
What are the products when ammonia reacts with water?
NH4+ + OH-
What is Kw?
The equilibrium constant for water
What is phenolphthalien?
an indicator
What is used to measure volume when doing a titration lab?
buret
What place does our buret read to?
hundredths
When is the end point reached in a titration?
When the indicator changes color
When is a solution neutral?
When the hydroxide ion and hydronium ion concentrations are equal.
What is the negative log of
1.0 x 10^-13?
13
What is the concetration s of the hydronium and hydroxide ions in a sample of rain that has a pH of 5?
[H3O+] = 1.0 x 10^-5
[OH-] = 1.0 x 10^-9

Get instant access to
all materials

Become a Member