AP Chemistry · Topic 8.2
pH and pOH of Strong Acids and Bases Practice
Part of Acids and Bases.(SAP-9.B)
Practice questions
11
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Sample questions
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Sample 1difficulty 1/5
pH =
- A
ln[H⁺]
- Bcheck_circle
−log[H⁺]
- C
[H⁺]
- D
log[H⁺]
Why
pH = −log[H⁺] (or −log a_H⁺ rigorously).
- A
Sample 2difficulty 2/5
What is pH?
- A
13
- B
10
- C
3
- Dcheck_circle
11
Why
pH = 14 - pOH = 14 - 3 = 11.
- A
Sample 3difficulty 2/5
What is the pH?
- A
12.0
- Bcheck_circle
2.0
- C
0.010
- D
1.0
Why
HCl is a strong acid, so [H+] = 0.010 M, and pH = -log(0.010) = 2.0.
- A
Sample 4difficulty 2/5
pH of 0.010 M NaOH is
- A
7.0
- Bcheck_circle
12.0
- C
2.0
- D
14.0
Why
[OH⁻] = 0.010 → pOH = 2 → pH = 12.
- A
Sample 5difficulty 2/5
Solution has [OH-] = 1.0e-3 M.
What is pH?
- A
3
- Bcheck_circle
11
- C
7
- D
14
Why
pOH = -log(1e-3) = 3. pH = 14 - 3 = 11.
- A