Addition of `Hl` will significantly suppress solubility or dissociation or hydrolysis of which of the following ?

Options

A. `HF_(aq)`
B. `HBr_(aq)`
C. Saturated solution of sparingly solution of sparingly soluble salt `Pbl_(2)`
D. `HClO_(4(aq))`

Answer

A, C

Explanation

`Hl` is a strong acid and strong electrolyte. It will suppress dessociation of weak acid, weak electrolyte having any ion common with Hl, due to common ion effect. HF is weak acid, common ion `H^(+)` with Hl.
`HClO_(4)` HBr are strong acids. Two strong acids/electrolytes can not suppress each others dissociation even if they have a common ion.