You are titrating 90.0 mL of a weak base solution (A-) with a concentration of 0.0515 M, using an HCl solution with a concentration of 0.0662 M. Note that the Ka Value for the conjugate acid , HA, is 5.6 x 10-10 . a) What is the pH of the initial weak base solution? b) What is the pH of the solution at the equivalence point? c) What is the pH of the solution when an additional 10 mL of HCl solution is added after reaching the equivalence point?

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