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Calculate the pH for each of the following cases in the titration of 25.0 mL of...

Calculate the pH for each of the following cases in the titration of 25.0 mL of 0.100 M pyridine, C5H5N(aq) with 0.100 M HBr(aq):

(a) before addition of any HBr

(b) after addition of 12.5 mL of HBr

(c) after addition of 24.0 mL of HBr

(d) after addition of 25.0 mL of HBr

(e) after addition of 37.0 mL of HBr

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