Question

Consider the reaction below.

Answer 1

Water is an amphoteric compound. This means it could be a base or an acid, depending on the substance it is to be reacted with. In this case, water is a base because HF is an acid. Now, if the reactant is an acid, its form after the reaction is called the conjugate pair. Since HF became F⁻, the acid-conjugate base pair is: HF and F⁻.

Answer 2

Option B: HF and F-

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