I am trying to get a better understaning of the pH of a solution containing a salt of a weak base and a salt of a weak acid. I know it depends on which equlibrium constant is greater but I am thinking more of what it is that actually happens. For example let say we have a solution containing salt of weak base, NH4+ and a salt of weak acid, CH3COONa. It should make NH3 and Ch3COOH right? If NH4 or CH3COONa are not in equal amounts we will at equilibrium have NH4 or CH3COONa and NH3 and CH3COOH. So how will I find the pH?