Calculate the pH of a 0.800 mol L^-1 NaCH₃CO₂ solution. K_a for acetic acid, CH₃CO₂H, is 1.8 × 10^-5. A)2.42 B)4.68 C)9.32 D)11.58

Question

Quizplus · Accepted Answer

NaCH₃CO₂ is a salt of a weak acid (CH₃COOH) and a strong base (NaOH). It hydrolyzes in water to form OH⁻ ions, making the solution basic. Using the formula for the hydrolysis of a salt of a weak acid, pH = 14 - 0.5(pKa - log C), where C is the concentration of the salt, we find the pH to be approximately 9.32.

Calculate the PH of a 0