Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highest pH ?

The pH of salt ${\mathrm{BaCl}}_2$ > 7, whereas ${\mathrm{SrCl}}_2$ and ${\mathrm{CaCl}}_2$ = 7 and ${\mathrm{MgCl}}_2$ < 7.

Since The bases present in these salts are hydroxides of group2 and the basic nature of hydroxides of group 2 increases down the group.