For the generic equilibrium ha(aq) ⇌ h+(aq) + a−(aq), which of these statements is true? for the generic equilibrium , which of these statements is true? the equilibrium constant for this reaction changes as the ph changes. if you add the soluble salt ka to a solution of ha that is at equilibrium, the concentration of a− would decrease. if you add the soluble salt ka to a solution of ha that is at equilibrium, the ph would increase. if you add the soluble salt ka to a solution of ha that is at equilibrium, the concentration of ha would decrease.