A salt, which on heating with conc. H_2 S O_4 gives violet vapour… - Vidyadip

MCQ

A salt, which on heating with conc. ${H_2}S{O_4}$ gives violet vapours, is

✓
Iodide
B
Nitrate
C
Sulphate
D
Bromide

✓

Answer

Correct option: A.

Iodide

a
(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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