The pH of a 0.10 M acetic acid solution () is approximately
- A
- Bcheck_circle
- C
- D
Explanation
[H⁺] ≈ √(Ka·C) = √(1.8e-5 · 0.10) = √1.8e-6 ≈ 1.34e-3. pH ≈ -log(1.34e-3) ≈ 2.87.
Weak Acid and Base Equilibria
AP Chemistry· difficulty 4/5
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