consider a buffer solution prepared by adding 0.45 moles of KOAc to 1.00 L of 2.00 M HOAc (Ka = 1.8x10^-5). If 0.05 mol of HCl is added to this buffer soluiton, the pH of the solution will be dropped slightly. The pH does not drastically decrease because the HCl reacts with the what while present in the buffer solution