What is conjugate acid and conjugate base.

Asked by ABHILASHA | 24th Oct, 2019, 06:23: AM

Expert Answer:

1) The base formed from an acid by donating a proton is called the conjugate base of the acid.

    Acid = Conjugate base + H+

2) The acid formed from a base by accepting a proton is called the conjugate acid of the base.

    Base + H+ = Conjugate acid

a. NH3 - Conjugate acid NH4+

b. H2O - It behaves as an acid and base both. Its conjugate acid will be H3O+ and conjugate base will be OH-.

c. HCO3- - It behaves as an acid and base both. Its conjugate acid will be H2CO3 and conjugate base will be CO32-

d. PH- Conjugate acid PH4+

e. In a reaction:

   CO32- + H2O  → HCO3+ Cl-

   HCO3-  is the conjugate acid of base CO32-.

   Cl is the conjugate base of acid H2O.

Answered by Ramandeep | 24th Oct, 2019, 01:05: PM