Calculate the pH of a 5.0 M solution of aniline (C₆H₅NH₂; K_b = 3.8 *10^-¹⁰). A) 9.64 B) 9.30 C) 4.36 D) -0.070 E) none of these

Question

Quizplus · Accepted Answer

The correct answer is A because the pH of a 5.0 M solution of aniline can be calculated using the Kb value and the following equation: pH = 14 - 1/2 pKb - 1/2 log [base]. Plugging in the values for Kb and [base], we get pH = 14 - 1/2 (-log 3.8 x 10^-10) - 1/2 log 5.0 = 9.64.

Calculate the PH of a 5