Suppose 100.0 mL of a 0.03750 M solution of the strong base Ba(OH)2 is titrated with a 0.4540M solution of the strong acid HClO4. The neutralization reaction is

BA(OH)2 (aq) + 2HClO4(aq) ---> Ba(ClO4)2(aq) + 2H2O(l)

Compute the pH of the titration solution before any acid is added, when the titration is 1.00 mL short of the equivalence point, when the titration is at the equivalence point, and when the titration is 1.00 mL past the equivalence point.