A) \[N{{a}_{3}}Fe{{(CN)}_{6}}\]
B) \[N{{a}_{3}}[Fe{{(CN)}_{5}}NOSNa]\]
C) \[N{{a}_{3}}[Fe{{(CN)}_{5}}NS]\]
D) \[Fe{{(CNS)}_{3}}\]
Correct Answer: B
Solution :
In sulphur detection of an organic compound, sodium nitropruside solution is added to sodium extract to produce violet colour due to the formation of \[N{{a}_{3}}[Fe(CN)NOSNa]\] sodium extract \[\underset{Sodium\text{ }nitropruside}{\mathop{N{{a}_{2}}S+N{{a}_{2}}[Fe{{(CN)}_{5}}NO]}}\,\] \[\xrightarrow[{}]{{}}\underset{Violet\text{ }colour}{\mathop{N{{a}_{3}}[Fe{{(CN)}_{5}}NOSNa]}}\,\]
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