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A chemist titrates 220.0mL of a 0.3139M pyridine C5H5N solution with 0.4370M HNO3 solution at 25°C. Calculate the pH at equivalence. The pKb of pyridine is 8.77 . Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of HNO3 solution added.

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