P-Block Elements Ques 125
Question: A salt, which on heating with conc. $ H_2SO_4 $ gives violet vapours, is
[CPMT 1971]
Options:
A) Iodide
B) Nitrate
C) Sulphate
D) Bromide
Show Answer
Answer:
Correct Answer: A
Solution:
$ KI+\underset{Conc\text{.}}{\mathop{H_2SO_4}}\xrightarrow{\Delta }KHSO_4+HI $ Conc. $ \underset{\begin{smallmatrix} \text{ }\text{ Violet} \\ \text{ }\text{vapour } \end{smallmatrix}}{\mathop{H_2SO_4+2HI\to 2H_2O+I_2+SO_2}}\uparrow $
