A buffer solution contains 0.316 M CH3NH3 C1 and 0.315 M CH3NH2 (methylamine). Determine the pH change when 0.069 mol HBr is added to 1.00 L of the buffer. (Assume Kb (CH3NH2) = 4.2 × 10-4.) pH after addition - pH before addition = pH change

A buffer solution contains 0.316 M CH3NH3 C1 and 0.315 M CH3NH2 (methylamine). Determine the pH change when 0.069 mol HBr is added to 1.00 L of the buffer. (Assume Kb (CH3NH2) = 4.2 × 10-4.) pH after addition - pH before addition = pH change

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter15: Additional Aqueous Equilibria

Section: Chapter Questions

Problem 28QRT: Calculate the pH change when 10.0 mL of 0.100-M NaOH is added to 90.0 mL pure water, and compare the...

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Question

A buffer solution contains 0.316 M CH3NH3 C1 and 0.315 M CH3NH2 (methylamine). Determine the
pH change when 0.069 mol HBr is added to 1.00 L of the buffer. (Assume
Kb (CH3NH2) = 4.2 × 10-4.)
pH after addition - pH before addition = pH change

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