Q.

The following equilibrium is established when HClO4 is dissolved in weak acid HF.

HF+ HClO4   ClO4 - + H2F+

Which of the following is correct set of conjugate acid base pair ?

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a

HF and  ClO4-

b

HF and HClO4

c

HClO4 and H2F+

d

HF and H2F+

answer is C.

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Detailed Solution

Conjugate acid base pair differ by a proton H+.

In the given equilibrium reaction, The conjugate acid-base pairs are,

H2F+(acid) -H+ HF(base)

HClO4acid-H+ClO4-base

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