Determine the pH of a 0.15 M aqueous solution of KF. For hydrofluoric acid, K_a = 7.0 × 10^-4. A)0.82 B)5.83 C)8.17 D)5.01 E)1.17

Name: Determine the pH of a 0.15 M aqueous solution of KF. For hydrofluoric acid, K a = 7.0 × 10 -4 . A)0.82 B)5.83 C)8.17 D)5.01 E)1.17
Brand: Quizplus
Rating: 4.8 (32 reviews)

Question

Quizplus · Accepted Answer

KF is a salt that dissociates into K+ and F- in water. F- is the conjugate base of HF and will hydrolyze to form OH-, making the solution basic. Calculate Kb using Kw/Ka, then find [OH-] and convert to pH. The pH is approximately 8.17.

Determine the PH of a 0