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In qualitative analysis ,in order to det...

In qualitative analysis ,in order to detect second group basic radical, `H_(2)S` gas is passed in the presence of dil. HCl to

A

ncrease in dissociation of `H_(2)S`

B

Decrease the dissociation of salt solution

C

Decrease the dissociation of `H_(2)S`

D

Increase the dissociation of salt solution

Text Solution

Verified by Experts

The correct Answer is:
C
HCl suppresses ionisation of weakly dissociated , H2S with the result only the ionic product of the sulphides of group II radicals exceed their corresponding solubility product and hence only these are precipitated.
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