1. The problem statement, all variables and given/known data If a weak acid, HA, is 3% dissociated in a 0.25 M solution, calculate the Ka and the pH of the solution. 2. Relevant equations pH = (pKa - log[HA])/2 3. The attempt at a solution Honestly, I'm not even sure where to start. I don't have the pH or the pKa - how am I suppose to solve for either one? I'm really struggling with this worksheet, so I'm sure this won't be my last question.