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The pH of 0.1 M solution of following in...

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

A

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

B

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

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
HCl is a strong acid and NaCl is neutral salt. NaCN undergoes anionic hydrolysis and gives basic solution. Hence its `pH gt 7`. Whereas `NH_4Cl` undergoes cationic hydrolysis and gives acidic solution, thus its `pH gt 7`.
Therefore the increasing order of pH IS
`HCl lt NH_4Cl lt NaCl lt NaCN`.
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