286956
Lassaigne's test is used in qualitative analysis to detect
1 Nitrogen
2 Sulphur
3 Chiorine
4 All of these
Explanation:
(d) Nitrogen, sulphur and halogens are tested in an organic compound by Lassaigne's test.
NOTTES The organic compound is fused with sodium metal as to convert these elements into ionisable inorganic substances,
\(\begin{aligned}
& \mathrm{Na}+\mathrm{C}+\mathrm{N} \longrightarrow \mathrm{NaCN} \\
& 2 \mathrm{Na}+\mathrm{S} \longrightarrow \mathrm{Na}_{2} \mathrm{~S} \\
& 2 \mathrm{Na}+\mathrm{X}_{2} \longrightarrow 2 \mathrm{NaX}
\end{aligned}\)
The cyanide, sulphide or halide ions can be confirmed in aqueous solution by usual test.
286956
Lassaigne's test is used in qualitative analysis to detect
1 Nitrogen
2 Sulphur
3 Chiorine
4 All of these
Explanation:
(d) Nitrogen, sulphur and halogens are tested in an organic compound by Lassaigne's test.
NOTTES The organic compound is fused with sodium metal as to convert these elements into ionisable inorganic substances,
\(\begin{aligned}
& \mathrm{Na}+\mathrm{C}+\mathrm{N} \longrightarrow \mathrm{NaCN} \\
& 2 \mathrm{Na}+\mathrm{S} \longrightarrow \mathrm{Na}_{2} \mathrm{~S} \\
& 2 \mathrm{Na}+\mathrm{X}_{2} \longrightarrow 2 \mathrm{NaX}
\end{aligned}\)
The cyanide, sulphide or halide ions can be confirmed in aqueous solution by usual test.