If a few drops of HCl is added to the buffer solution with the following equilibrium, ________. NH4+(aq) + H₂O(1) ⇔ H3O+(aq) + NH3(aq) A) the concentrations of both NH3 and NH4+ decrease B) the concentrations of both NH3 and NH4+ increase C) the concentration of NH3 increases but NH4+ decreases D) the concentration of NH3 decreases but NH4+ increases

Question

Quizplus · Accepted Answer

Adding HCl to the buffer solution increases the concentration of H3O+ ions. According to Le Chatelier's principle, the equilibrium will shift to the left to reduce the stress of added H3O+ ions, thus increasing the concentration of NH4+ and decreasing the concentration of NH3.

If a Few Drops of HCl Is Added to the Buffer