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Unformatted text preview: 4. At a pH of 4.80, the concentration of lactic acid and lactate are 0.010 M and 0.087 M, respectively. What is the pKa for lactic acid? 5. The pKa for acetic acid is 4.76. What is the pH of a solution containing 0.10 M acetic acid and 0.20 M sodium acetate? 6. Calculate the concentrations of acetic acid and acetate required to prepare a 200 mM buffer solution with a pH of 5.0. The pKa for acetic acid is 4.76. 7. Benzoic acid has a pKa of 4.20. What is the ratio of benzoic acid and benzoate at a pH of 4.20? pKa 1 = 2.15 pKa 2 = 7.20 pKa 3 = 12.37...
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This note was uploaded on 04/11/2011 for the course BCHM 561 taught by Professor Mr. during the Spring '10 term at Purdue.
- Spring '10