List of top Chemistry Questions on Ionic Equilibrium asked in CPET

A monobasic acid with a concentration of 0.04 M is dissociated to the extent of 0.5% in an aqueous solution. What is the dissociation constant of the acid?

The pH and pOH of 0.1 M sulphuric acid are: (\(H_2SO_4\) dissociates completely to give 2 \(H^+\) ions per formula unit; \(pK_w = 14\))

What is the pH of the solution formed by mixing 40 mL of 0.1 M HCl with 10 mL of 0.45 N NaOH?