MCQ
Which buffer solution comprising of the following has its $\ce{pH }$ value greater than $7\ ?$
- A$ \mathrm{CH}_3 \mathrm{COOH}+\mathrm{CH}_3 \mathrm{COONa} $
- B$ \mathrm{HCOOH}+\mathrm{HCOOK}$
- C$ \mathrm{CH}_3 \mathrm{COONH}4 $
- ✓$ \mathrm{NH}_4 \mathrm{OH}+\mathrm{NH}_4 \mathrm{Cl} $
