The pH of a buffer solution of 0.l M NH4OH[ pKa = 4.0] and 0.1 M NH4Cl is

Question

The pH of a buffer solution of 0.l M NH4OH[ pKa = 4.0] and 0.1 M NH4Cl is (A) 1 (B) 4 (C) 10 (D) 13

Tardigrade Admin · Accepted Answer

For a basic buffer, pOH =pkb+log ( text[Salt]/ text[Base]) =4.0+log (0.1/0.1) =4+log 1=4+0=4 pH=14-pOH=14-4=10

Q. The pH of a buffer solution of 0.l M $N H_{4} O H [p K_{a} = 4.0]$ and $0.1 MN H_{4} Cl$ is