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Equilibrium

Question
CBSEENCH11006508

What is meant by the conjugate acid-base pair? Find the conjugate acid/base for the following species:
HNO subscript 2 comma space space CN to the power of minus comma space space space HClO subscript 4 comma space space space straight F to the power of minus comma space space space OH to the power of minus comma space space CO subscript 3 superscript 2 minus end superscript space and space straight S to the power of 2 minus end exponent.

Solution
An acid-base pair which differs by a proton is called conjugate acid-base pair.
Species space space space space space space space space space space space space Conjugate space base
HNO subscript 2 space space space space space space space space space space space space space space space space space space space NO subscript 2 superscript minus
HClO subscript 4 space space space space space space space space space space space space space space space space space space ClO subscript 4 superscript minus
CN to the power of minus space space space space space space space space space space space space space space space space space space space space HCN
straight F to the power of minus space space space space space space space space space space space space space space space space space space space space space space space HF
OH to the power of minus space space space space space space space space space space space space space space space space space space space space straight H subscript 2 straight O
CO subscript 3 superscript 2 minus end superscript space space space space space space space space space space space space space space space space space HCO subscript 3 superscript minus
straight S to the power of 2 minus end exponent space space space space space space space space space space space space space space space space space space space HS to the power of minus