Chemistry - Ionic Equilibrium Question with Solution | TestHub

Key Idea : As the basic nature increases, $pH$ increases $\text{pH of base }>7$ $pH$ of acid $<7$ In alkaline earth metals on moving downward the size of cation increases, thus basicity increases. Hence, the increasing order of basicity is as : ${\mathrm{MgCl}}_2<{\mathrm{CaCl}}_2<{\mathrm{SnCl}}_2<{\mathrm{BaCl}}_2$ Therefore, the solution of ${\mathrm{BaCl}}_2$ will record the highest $\mathrm{pH}$.