Which of the following represents acid-base pair for the equilibrium reaction ? HCl + H2O ⇌ H3O+ + Cl

Foundation

Chemistry Foundation

Theories of Acids and Bases

Question

Which of the following represents acid-base pair for the equilibrium reaction ?

HCl + H₂O ⇌ H₃O⁺ + Cl^–

Cl^–, H₂O

HCl, H₃O⁺

HCl, Cl^–

HCl, H₂O

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$HCl + H_{2} O ⇌ H_{3} O^{+} + {Cl}^{-}$
in this equation.
$HCl ⇌ {Cl}^{-} & H_{2} O ⇌ H_{3} O^{+}$
are conjugate acid-base pairs.