Calculate the pH of a 0.100 M NaCH₃CO₂ solution.K_a for acetic acid,CH₃CO₂H,is 1.8 × 10^-5. A)2.87 B)5.13 C)8.87 D)11.13

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Quizplus · Accepted Answer

NaCH₃CO₂ is a salt of a weak acid (CH₃CO₂H) and a strong base (NaOH). It hydrolyzes in water to form CH₃CO₂⁻, which reacts with water to form OH⁻, making the solution basic. Using the formula for the hydrolysis of a salt of a weak acid, pH = 14 - 1/2(pKa - log C), where C is the concentration, we find pH ≈ 8.87.

Calculate the PH of a 0