Chemistry - Ionic Equilibrium Question with Solution | TestHub

 $\mathrm{pH}$ $0.01\mathrm{MHCl}=2$
$\mathrm{pH}$ of $0.01\mathrm{MNaOH}=12$
$\mathrm{pH}$ of $0.01{\mathrm{MCH}}_3\mathrm{COONa}>7$
$\mathrm{pH}$ of $0.01\mathrm{MNaCl}=7$
So the order of $\mathrm{pH}:\mathrm{B}>\mathrm{C}>\mathrm{D}>\mathrm{A}$

So the order of $\mathrm{pOH}: \mathrm{B}<\mathrm{C}<\mathrm{D}<\mathrm{A}$