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a) consider the titration of 25 mL of .25 M NH3 with .05M HBr .What is the pH at the equivalence point?

b)50.0 mL of a 0.010 M aqucous solution of HBr is titrated with 0.25 M KOH. What is the pH of the solution after 5.0 mL of the base has been added?

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