When an organic compound contains both nitrogen and sulphur, Lassaigne's fusion with a limited amount of sodium forms a species that gives a blood-red color with . This complex is:

Question

When an organic compound contains both nitrogen and sulphur, Lassaigne's fusion with a limited amount of sodium forms a species that gives a blood-red color with $Fe^{3+}$. This complex is:

Prashant Kotian · Accepted Answer

Correct answer: C. Fusion produces Sodium thiocyanate (). The ion reacts with to form the blood-red iron(III) thiocyanate complex, .

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