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April 20, 2014

Homework Help: org. chem

Posted by meghan on Friday, February 8, 2013 at 5:58pm.

How to start these problems out: Please help thank you
Use the Henderson-Hasselbach equation:
pH = pKa + log [A-]/[AH], where A- is the conjugate base and AH is the weak acid.

Calculate the pH of an acetate buffer in which the acetate concentration [CH3COO-] is 3.5 times greater than acetic acid [CH3COOH]. pKa = 4.74.

9. How would you prepare a 0.6 M acetate buffer with a pH = 4.0?

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