Question

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$\bigstar$Question: Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highest pH.
(ANSWER WITH REASON.​)
A) MgCl2
B) CaCl2
C) SrCl2
D) BaCl2

Answer 1

answer = option (d) Bacl2

explanation = 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 increase down the group .Hence higher the basic character higher will be the Ph.

Answer 2

Question??

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

(ANSWER WITH REASON.)

A) MgCl2

B) CaCl2

C) SrCl2

D) BaCl2

ANSWER :-

As the size of the cation is increased down the group among alkaline earth metal, basicity is increased (base has more value on ph scale) as barium is at bottom of the periodic table, in alkaline earth metals.

Hence, BaCl2 is more basic.

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