If a few drops of HCl is added to the buffer solution with the following equilibrium, ________.
NH4+(aq) + H2O(1) ā H3O+(aq) + NH3(aq)
the concentrations of both NH3 and NH4+ decreasethe concentration of NH3 decreases but NH4+ increasesthe concentration of NH3 increases but NH4+ decreasesthe concentrations of both NH3 and NH4+ increase