First slide

PH scale, PH of strong acids and strong bases

Question

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

Easy

A

${BaCl}_{2}$
B

${MgCl}_{2}$
C

${CaCl}_{2}$
D

${SrCl}_{2}$

Solution

The pH of salt ${BaCl}_{2}$ > 7, whereas ${SrCl}_{2}$ and ${CaCl}_{2}$ = 7 and ${MgCl}_{2}$ < 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.

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