What is the pH of a 0.20 M solution of NH₄Cl? [K_b(NH₃) = 1.8 × 10^-5] A) 3.74 B) 4.98 C) 6.53 D) 9.02 E) 11.28

Name: What is the pH of a 0.20 M solution of NH 4 Cl? [K b (NH 3 ) = 1.8 × 10 -5 ] A) 3.74 B) 4.98 C) 6.53 D) 9.02 E) 11.28
Brand: Quizplus
Rating: 4.7 (34 reviews)

Question

Quizplus · Accepted Answer

NH4Cl is a salt of a weak base (NH3) and a strong acid (HCl). In solution, NH4+ acts as a weak acid. Using the relation Kw = Ka * Kb, we find Ka for NH4+ and then calculate the pH of the solution. The pH is approximately 4.98.

What Is the PH of a 0