Purification and characteristic of organic compounMedium
Question
Which one of the following reactions does NOT belong to "Lassaigne's test"?
Options
A.$Na + C + N\underset{\phantom{\Delta\ }}{\overset{\phantom{\ }}{\rightarrow}}NaCN$
B.$2Na + S\underset{\phantom{\Delta\ }}{\overset{\phantom{\ }}{\rightarrow}}{Na}_{2}\text{ }S$
C.$Na + X\underset{\phantom{\Delta\ }}{\overset{\phantom{\ }}{\rightarrow}} + NaX$
D.$2CuO + C\underset{\phantom{\Delta\ }}{\overset{\phantom{\ }}{\rightarrow}}2Cu + {CO}_{2}$
Solution
Sol. [Key Concept: Reaction that does NOT belong to Lassaigne's test] Nitrogen, Sulphur, halogens and phosphorus present in an organic compound are detected by "Lassaigne's test".
$${Na + C + N\overset{\phantom{\Delta\ }}{\rightarrow}NaCN }{2Na + S\overset{\phantom{\Delta\ }}{\rightarrow}{Na}_{2}\text{ }S }{Na + X\overset{\phantom{\Delta\ }}{\rightarrow}\underset{(X = Cl,Br,I)}{NaX}}$$
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