Acids and Bases Practice Test
Name: __________________________
1. What is the pOH of dish soap if the pH is 3.1?
2. What is the pH when the hydrogen ion concentration is 7.0
10 M?
3. What is the pOH of a solution with a concentration of 0.024M hydrochloric acid?
4. If [OH ] = 1 x 10-5M, what is the [H+] of the solution?
5. What is the [OH-] concentration is the pH of stomach acid is 2.3?
6. Calculate the acid dissociation (Ka) constant of a weak monoprotic acid (HCl, for example), if a 0.5M
solution of this acid gives a hydrogen-ion concentration of 0.000 1M?
7. What is the acid dissociation constant of a weak acid (acetic acid, for example), if a concentration of
0.3M gives a hydrogen-ion concentration of 0.001M?
8. A 0.500M solution of a weak acid, HX, is only partially ionized. The [H ] was found to be 4.02
10
M. Find the dissociation constant for this acid.
9. Find the pOH of a 0.325M acetic acid solution. Ka = 1.8 x 10-5
10. What is the hydrogen-ion concentration if the pH is 3.7?
11. What kind of ion is contained in salts that produce an acidic solution?
a. a positive ion that releases a proton to water
b. a negative ion that releases a proton to water
c. a positive ion that attracts a proton from water
d. a negative ion that attracts a proton from water
12. The process of adding a known amount of solution of known concentration to determine the
concentration of another solution is called ________________.
a. neutralization
c. titration
b. hydrolysis
d. buffer capacity
13. If an acid has a K = 1.6
10
, what is the acidity of the solution?
a. acidic
c. neutral
b. basic
d. The answer cannot be determined.
14. How many mL of a 3M NaOH solution are required to completely neutralize 20.0 mL of 1.5M H 2SO4?
15.
16.
17.
18.
(Start by writing a balanced equation!)
What is the molarity of a solution of Ca(OH)2 if 15.0 mL of the solution is required to neutralize 20.0
mL of 2M HCl?
Explain the difference between an end point and an equivalence point in a titration.
Describe self-ionization of water.
Describe the purpose of a buffer and use an example to show how it works.