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Question
For a reaction \[\ce{HCl_{(aq)} + H2O_{(l)} ⇌ H3O^+_{ (aq)} + Cl^-_{ (aq)}}\]
Which of the following is a conjugate acid-base pair?
Options
HCl and H2O
H3O+
H3O+ and H2O
HCl and H3O+
Solution
H3O+ and H2O
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