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General Chemistry

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Identifying the Strongest Conjugate Base

CHEM-JE7RIQ

Which of the following acids will have the strongest conjugate base?

A

${C}_{6}{H}_{5}COOH, {K}_{a}=6.3\times {10}^{-5}$

B

$HCOOH, {K}_{a}=1.8\times {10}^{-4}$

C

$HOOCCOOH, {K}_{a}=6.5\times {10}^{-2}$

D

$C{H}_{3}COOH, {K}_{a}=1.8\times {10}^{-5}$