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pH of solution with HCl and pyridine

What is the pH of a solution made from 400.0 mL of 0.0250 M HCl and an equimolar amount of 0.100 M pyridine (a nitrogen base with Kb = 1.4 * 10 ^-9)?

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This is a titration questions.

We need moles for each the HCl and the Pyridine (Pyr). For HCl we know that it will be 0.4 L x 0.0250 M. For the Pyr we will need the same amount, and we will use 100 mL of the 0.100 M ...

Solution Summary

It shows how to calculate the pH of solution with HCl and pyridine.