Which of the following represents conjugate acid-base pair?
Explanation for the correct options:
A)
are conjugate acid/base pairs.
From this dissociation reaction, it is clear that can act as a base and is conjugate acid of the base ( ).
C)
are conjugate acid/base pairs.
From this dissociation reaction, it is clear that act as an acid and is conjugate base of .
Explanation for the incorrect options:
B)
are not conjugate acid/base pairs.
From the above dissociation equations, it is understood that is an acid and its conjugate base is not . And is the conjugate base of .
Hence, options (A) and (C) are correct.