Question
Equimolar solutions of the following were prepared in water separately which one of the solutions will record the highest pH?
-
SrCl2
-
BaCl2
-
MgCl2
-
CaCl2
Solution
B.
BaCl2
As the basic nature increases
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 or basicity is as:
MgCl2 < CaCl2 < SnCl2< BaCl2
Therefore, the solution of BaCl2 will record the highest pH.
