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If \( \mathrm{CH}_{3} \mathrm{COOH}+\mathrm{OH}^{-} \rightarrow \mathrm{CH}_{3} \mathrm{COO}^{-}+\mathrm{H}_{2} \mathrm{O}+\mathrm{x} \mathrm{kJ} \)
P \( \mathrm{H}^{+}+\mathrm{OH}^{-} \rightarrow \mathrm{H}_{2} \mathrm{O}+\mathrm{y} \mathrm{kJ} \)

W
The enthalpy change for the reaction: \( \mathrm{CH}_{3} \mathrm{COOH} \rightarrow \mathrm{CH}_{3} \mathrm{COO}^{-}+\mathrm{H}^{+} \)is
(1) \( x+y \)
(2) \( x-y \)
(3) \( y-x \)
(4) \( x-y / 2 \)
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