TS EAMCET 11-Sep-2020 Shift 1 Solved Paper

Given, concentration of salt (NH4Cl)=0.01M
Concentration of base (NH4OH)=0.1M
pKb=5
Volume of buffer solution =10L
A mixture of NH4OH and NH4Cl forms basic buffer solution. The Henderson's equation for a basic buffer solution is
pOH=pKb+log‌

[Salt]

[‌ Base ‌]

pKb=−log‌Kb=−log‌0‌l=1
By substituting values in the above equation, we get
pOH=5+log‌

0.01

0.1

=4
0. pH=14−pOH=14−4=10