The PKa of a Certain Weak Acid Is 4

question 30

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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