For a salt of a weak acid and a weak base (WA-WB), which of the following expressions correctly give — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

For WA-WB salts (like $CH_3COONH_4$), both ions hydrolyze. The degree of hydrolysis and pH are independent of the salt concentration $C$. The exact formula is $pH = 7 + \frac{1}{2}pK_a - \frac{1}{2}pK_b$.