1) (a) Calculate the pH of a 1.3x10^-7 M solution of benzoic acid at 25°C. (The pKa of benzoic acid is 4.19 at 25°C. You may have to take into account the autoionization of water).
(b) What is the percent ionization of the benzoic acid in this 1.3x10^ -7 M solution at 25°C