One of the most difficult topics several years ago was weak acid and weak base equilibria and associated mathematical determinations about them in quantitative chemistry. Our class spent a month and a half just studying equilibria of weak acids and weak bases and their buffers, pH's, titration curves, and all their calculations. This was so difficult that I could not master it. Since graduating, I restudied that stuff a few times and it became much more learnable. Still I have not mastered it. I wonder; if I could not master equilibria of weak acids and weak bases, does this mean that I would not be graduate school quality for studying Chemistry? Or is this relatively unimportant?