Question

if PKa of CH3COOH is 4.75 in aqueous medium then PKb of acetate ion will be ?​

Answer 1

Ques:- if PKa of CH3COOH is 4.75 in aqueous medium then PKb of acetate ion will be ?

Ans:- Both NH4+ and CH3COO− ion of CH3COONH4

                      CH3COONH4+H2O⇋CH3COO−+NH4+

                                   1                                          0                 0

                                  1−h                                     h                 h

pKa(CH−3COOH)=4.76⟹Ka=1.74×10−5

pKb(NH4OH)=4.75⟹Kb=1.78×10−5

KH for CH3COONH4=KaKbKw=(1.74×10−5)

Answer 2

Answer:

The answer is pKb(NH4OH)=4.75