$\left(\mathrm{R}=0.083 \mathrm{~L}\right.$ bar mol-1 $\mathrm{K}^{-1}$ નો ઉપયોગ કરો)
$(i)$ $0.10\, {M} \,{Ba}_{3}\left({PO}_{4}\right)_{2}$
$(ii)$ $0.10\, {M}\, {Na}_{2} {SO}_{4}$
$(iii)$ $0.10\, {M}\, {KCl}$
$(iv)$ $0.10 \,{M} \,{Li}_{3} {PO}_{4}$