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Consider the titration of a 20.0 mL sample of 0.200 M CH3NH2 with 0.100 M HI....

Consider the titration of a 20.0 mL sample of 0.200 M CH3NH2 with 0.100 M HI. The Kb for CH3NH2 is 4.4 x 10-4. The volume of equivalence is 40.0 mL. Remember to report pH with two places past the decimal.

What is the pH of the sample before any HI is added?

What is the pH at half-way to the equivalence volume?

What is the pH at the equivalence volume?

What is the pH when 45.0 mL of HI have been added?

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