Question

In the equilibrium
${CH}_{3}COOH+HF\rightleftharpoons {CH}_{3}COO{H}_2^{+}+F^{-}$

• A. $F^{-}$ is the conjugate acid of ${CH}_{3}COOH$
• B. $F^{-}$ is the conjugate base of $HF$
• C. ${CH}_{3}COOH$ is the conjugate acid of ${CH}_{3}COO{H}_2^{+}$
• D. ${CH}_{3}COO{H}_2^{+}$ is the conjugate base of ${CH}_{3}COOH$

Answer 1

The correct option is B $F^{-}$ is the conjugate base of $HF$

b'

${CH}_{3}COOH+HF\rightleftharpoons {CH}_{3}COO{H}_2^{+}+F^{-}$

$HF$ gives $H^{+}$ to the ${CH}_{3}COOH$, so it is acid its conjugate base is $F^{-}$.

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