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A- is a weak base. Which equilibrium corresponds to the equilibrium constant Ka for HA? [A]...

A- is a weak base. Which equilibrium corresponds to the equilibrium constant Ka for HA? [A] HA (aq) + H2O (l) H3O+ (aq) + A- (aq) [B] A- (aq) + H3O+ (aq) HA (aq) + H2O (l) [C] A- (aq) + OH- (aq) HOA2- (aq) [D] A- (aq) + H2O (l) HA (aq) + OH- (aq) [E] HA (aq) + H2O (l) H2A+ (aq) + OH- (aq) Please explain your answer

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