. What do you mean by Conjugate Acid - Base Pair Concept

Best Answer

An acid-base pair that differs only by one proton is called a conjugate acid-base pair.

Consider a reaction 

In this reaction HCl donates a proton to H2O and is, therefore an acid. Water, on the other hand, accepts a proton from HCl, and is, therefore, a base. In the reverse reaction, the H3O+ ion donates a proton to Cl– ion, hence H3O+ ion is an acid. Cl– ion is a base.

Which can be formed from each other mutually by the gain or loss of a proton are called conjugate acid - base pairs.

If in the above reaction, the acid HCl is an acid and Cl– is its conjugate base.



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