Which Substance Would Be the Best Buffer at PH 8

question 34

Multiple Choice

Which substance would be the best buffer at pH 8 if it had to be able to buffer against either acid or base?

• A) one with a pK_a of 7
• B) one with a pK_a of 8
• C) one with a pK_a of 9
• D) The pK_a of a substance doesn't tell you whether it would be a good buffer at this pH.

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