In the equilibrium reaction which pair of species constitutes a conjugate acid–base pair?

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

Problem

In the equilibrium reaction HF+H2O⇌H3O++F−HF + H_2O \rightleftharpoons H_3O^+ + F^- which pair of species constitutes a conjugate acid–base pair? (a) H3O+ and F−H_3O^+ \, \text{and} \, F^- (b) HF and F−HF \, \text{and} \, F^- (c) H2O and F−H_2O \, \text{and} \, F^- (d) H2O and HFH_2O \, \text{and} \, HF

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