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Equimolar solution of the following subs...

Equimolar solution of the following substances were prepared separately. Which one of these will record the highest pH value?

A

`MgCl_(2)`

B

`CaCl_(2)`

C

`SrCl_(2)`

D

`BaCl_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Equimolar solutions of the given chlorides when prepared in water forms their respective hydroxides. `Be(OH)_(2)` is amphoteric, but the hydroxides of other alkaline earth metals are basic. The basic strength increases down the group. Therefore higher the basic character higher will be the pH.
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