Homework Help: General Chemistry

Posted by Nhi Song on Monday, February 27, 2012 at 8:05pm.

How do I calculate the ratio of weak base to weak acid in a methyl amine buffer solution at pH=10.645 and pH=11.645 and pH=9.645?

General Chemistry - DrBob222, Monday, February 27, 2012 at 9:56pm
Use the Henderson-Hasselbalch equation.
pH = pKa + log[(base)/(acid)]
Plug in pH and pKa and solve for base/acid ratio.

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