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The pH of 0.1 M solution of the followin...

The pH of 0.1 M solution of the following salts increases in the order

A

`NaCl lt NH_(4) Cl lt NaCN lt HCl`

B

`HCl lt NH_(4) Cl lt NaCl lt NaCl`

C

`NaCN lt NH_(4) Cl lt NaCl lt HCl`

D

`HCl lt NaCl lt NaCN lt NH_(4) Cl`.

Text Solution

Verified by Experts

The correct Answer is:
B
NaCl = neutral (pH=7) , `NH_(4)Cl` = Slightly acidic
`(pH lt 7) , NaCN = "basic" (pH gt 7) , HCl = "Strongly acidic"(pH lt lt 7)`.
`:.` Order will be `HCl lt NH_(4)Cl lt NaCl lt NaCN`.
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