A) in the presence of dilute \[HCl\] to:
B) increase the dissociation of \[{{H}_{2}}S\] decrease the dissociation of salt solution
C) decrease the dissociation of \[{{H}_{2}}S\]
D) increase the dissociation of salt solution
Correct Answer: C
Solution :
In qualitative analysis, in order to detect lInd group radicals, \[{{H}_{2}}S\] gas is passed in the presence of dilute \[HCl\] to decrease the dissociation of \[{{H}_{2}}S\] by common-ion effect so that less S ~ ions are obtained and only IInd group radical could precipitate.You need to login to perform this action.
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