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Lassaigne's extract of thiourea, SC(NH(2...

Lassaigne's extract of thiourea, `SC(NH_(2))_(2)` is boiled with ferrous sulphate and then acidified with `HCl`, the colour of the resulting solution will be

A

prussian blue

B

green

C

black

D

red

Text Solution

Verified by Experts

The correct Answer is:
D
Compound having both `N` and `S` will form `NaCNS` leadings to red coloured `Fe(CNS)_(3)` during Lassaigne's test for nitrogen.
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A2Z-CLASSIFICTION, PURIFICATION AND NOMENCLATURE OF ORGANIC COMPOUNDS-Purification Of Organic Compounds
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