HA(aq)+ H2O (l) <-> H3O+(aq)+ A¯ (aq)

Question

Given the reaction above, which of the following will cause an increase in the pH of an equilibrium mixture? Give all answers which apply.

A) add KA B) add HA
C) remove A¯ D) remove HA
E) none of these will affect the pH.

Answer 1

There are Le Chatelier's Principle type question. You want answers that will shift the equilibrium to the left since that will decrease the H^+ (thus the pH will go up)