For the hydrolysis of a salt derived from a weak acid and a weak base (WA-WB), which of the followin — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

For a WA-WB salt, both cation and anion hydrolyze. The hydrolysis constant is $K_h = K_w / (K_a K_b)$. The degree of hydrolysis is $h = \sqrt{K_h} / (1+\sqrt{K_h}) \approx \sqrt{K_h}$, which is independent of concentration $C$ (making D incorrect). The pH relies on the difference between acid and base strengths: $pH = 7 + \frac{1}{2}pK_a - \frac{1}{2}pK_b$.