(a) Calculate the ratio of dissolved benzoic add to benzoate ion that will exist in solution at equilibrium at a pH of 2.00. The acid equilibrium con¬stant (Ka) for benzoic acid is 6.46 x 10-5• Note that this calculation does not account for the benzoic acid that has precipitated from solution, but you can assume that the higher the ratio, the more benzoic acid will pre¬cipitate. (b) Carry out the same calculation for a pH of 4.00, and explain why it was important to reduce the pH to below 4 in this experiment.