What will happen if a small amount of hydrochloric acid is added to a 0.1 M solution of HF? A)The percent ionization of HF will decrease. B)K_a for HF will increase. C)K_a for HF will decrease. D)The percent ionization of HF will remain unchanged. E)The percent ionization of HF will increase.

Question

Quizplus · Accepted Answer

Adding hydrochloric acid (HCl), a strong acid, to a solution of HF, a weak acid, increases the concentration of H+ ions in the solution. This leads to a shift in the equilibrium of the HF dissociation reaction to the left, according to Le Chatelier's principle, thereby decreasing the percent ionization of HF.

What Will Happen If a Small Amount of Hydrochloric Acid