A 25.0 mL sample of 0.100 M pyridine (Kb for pyridine is 1.7 ✕ 10-9) is titrated with 0.100 M HCl solution. Calculate the pH after the addition of the following amounts of HCl with sig figs.

Question

A 25.0 mL sample of 0.100 M pyridine (Kb for pyridine is 1.7 ✕ 10-9) is titrated with 0.100 M HCl solution. Calculate the pH after the addition of the following amounts of HCl with sig figs.
a) 24.5 mL 
b) 25.0 mL

DrBob222 · Answer

I answered a similar problem early today but it three more point on the titration curve. Your two points are the same. Follow up with the post.
https://www.jiskha.com/subjects?subject=chemistry
Let me know if you have further questions or don't understand something.