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Question
Label the conjugate acid-base pair in the following reaction:
\[\ce{HCl + H2O ⇌ H3O\overset{\oplus} + Cl\overset{\ominus}{}}\]
Solution
\[\ce{\underset{Acid1}{HCl} + \underset{Base2}{H2O} ⇌ \underset{Acid2}{H3O+} + \underset{Base1}{Cl-}}\]
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