Question

which of the following pair is a conjugate acid / base pair



option

a. Ch3CooH and OH-

b . HCN. and CN-

c .. HCN. and OH-

d.. HCL. and. oH-​

Answer 1

Answer:

b . HCN. and CN- is right answer...

Answer 2

Answer:

HCN and CN⁻ is the conjugate acid-base pair.

Explanation:

• According to Bronsted-lowry concept of acid-base pair, the pairs of acids and bases which are formed from each other by the gain or loss of proton are called conjugate acid-base pairs.
• HCN can be formed, if CN⁻ accepts H⁺.
• CN⁻ can be formed if HCN loss its H⁺.

                           HCN     →     H⁺     +    CN⁻        

                          Acid                       Conjugate Base

• CN⁻  is conjugate base of HCN.