The amino acid glycine has been used as a buffer for a number of biochemical experiments. Glycine contains two ionizable groups, one with a pKa of 2.34, and the other with a pKa of 9.60. Glycine would be an effective buffer at which one of the following pH values? A. 4.0 B. 6.0 C. 8.0 D. 9.0 E. 11.0

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Chapter1: Chemical Foundations
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The amino acid glycine has been used as a buffer for a number of biochemical experiments. Glycine
contains two ionizable groups, one with a pKa of 2.34, and the other with a pKa of 9.60. Glycine would be an
effective buffer at which one of the following pH values?
A. 4.0
B. 6.0
C. 8.0
D. 9.0
E. 11.0

 

Expert Solution
Step 1

Buffer solution: The solution that resists the change in pH is known as a buffer solution. The buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. It resists the pH changes when a small amount of strong acid or base is added to it.

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