What is the pH of a buffer that contains 0.250 mol of CH3NH2 and 0.450 mole of CH3NH3CI? Kb for CH3NH2 is 4.40 x 10-4.

Chemistry: An Atoms First Approach
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ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
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Chapter15: Solubility And Complex Lon Equilibria
Section: Chapter Questions
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5. A buffer may be prepared using a weak base (B) and a salt of its conjugate acid
(BH). The following form of the Henderson-Hasselbalch equation can be used
to calculate the pH of the buffer.
pH = pKa + log
[B]
[BH+]
What is the pH of a buffer that contains 0.250 mol of CH3NH2 and 0.450 mole of
CH3NH3CI? Kb for CH3NH₂ is 4.40 x 104.
Transcribed Image Text:5. A buffer may be prepared using a weak base (B) and a salt of its conjugate acid (BH). The following form of the Henderson-Hasselbalch equation can be used to calculate the pH of the buffer. pH = pKa + log [B] [BH+] What is the pH of a buffer that contains 0.250 mol of CH3NH2 and 0.450 mole of CH3NH3CI? Kb for CH3NH₂ is 4.40 x 104.
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