A) \[{{F}^{-}}\]is the conjugate acid of \[C{{H}_{3}}COOH\]
B) \[{{F}^{-}}\]is the conjugate base of \[HF\]
C) \[C{{H}_{3}}COOH\] is the conjugate acid of \[C{{H}_{3}}COO{{H}_{2}}^{+}\]
D) \[C{{H}_{3}}COO{{H}_{2}}^{+}\] is the conjugate base of \[C{{H}_{3}}COOH\]
Correct Answer: B
Solution :
\[C{{H}_{3}}COOH+HF\]⇌\[C{{H}_{3}}COOH_{2}^{+}+{{F}^{-}}\].\[HF\] gives \[{{H}^{+}}\] to the \[C{{H}_{3}}COOH\]. So it is a conjugate base of HF.
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