MCQ
A salt, which on heating with conc. ${H_2}S{O_4}$ gives violet vapours, is
- ✓Iodide
- BNitrate
- CSulphate
- DBromide
✓
Answer
Correct option: A.
Iodide
a
(a) $KI + H_2SO_4\, \rightarrow \, KHSO_4 + HI$
(a) $KI + H_2SO_4\, \rightarrow \, KHSO_4 + HI$
$Conc.\,H_2SO_4 + 2HI \,\rightarrow \, 2H_2O + I_2 + SO_2$
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