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    Principles of Biochemistry Study Set 1
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    Exam 3: Amino Acids and the Primary Structures of Proteins
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    The PK<sub>a</sub><sub> </Sub>of a Certain Weak Acid Is 4
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The PKa of a Certain Weak Acid Is 4

Question 62

Question 62

Multiple Choice

The pKa of a certain weak acid is 4.0. Calculate the ratio of proton acceptor to proton donor at pH 7.0.


A) 1000:1
B) 20:1
C) 3:1
D) 1:1
E) The ratio cannot be calculated without knowing the structure of the weak acid.

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