A) increase the 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
Correct Answer: C
Solution :
In qualitative analysis, in order to detect lI nd 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 \[{{S}^{2-}}\] - ions are obtained and only Il nd group radical could precipitate.You need to login to perform this action.
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