Calculate the pH of a solution that is 0.410 M in HOCl and 0.050 M in NaOCl. [K_a(HOCl) = 3.2 * 10^-8] A) 0.39 B) 3.94 C) 6.58 D) 7.49 E) 8.40

Question

Quizplus · Accepted Answer

The solution is a buffer, and the pH can be calculated using the Henderson-Hasselbalch equation: pH = pKa + log([A-]/[HA]). Here, pKa = -log(3.2 * 10^-8) = 7.49. Plugging in the concentrations: pH = 7.49 + log(0.050/0.410) = 6.58.

Calculate the PH of a Solution That Is 0