Question

Whish one of the following is not a conjugate acid -base pair ?

NH3 and NH2-
HNO3 and HNO2
H2O and OH-
HI and I-

Answer 1

HNO3 and HNO2

Step-by-step explanation:

Conjugate acid base pair differ only by the presence of a hydrogen proton (H+).

NH3 and NH2-

This is a Conjugate acid base pair

HNO3 and HNO2

This is a NOT Conjugate acid base pair

H2O and OH-

This is a Conjugate acid base pair

HI and I-

This is a Conjugate acid base pair