SATHEE: P-Block Elements Ques 128

P-Block Elements Ques 128

Question: $H I$ cannot be prepared by the action of conc. $H_{2} S O_{4}$ on $K I$ because

[MNR 1984]

Options:

A) $H I$ is stronger than $H_{2} S O_{4}$

B) $H I$ is more volatile than $H_{2} S O_{4}$

C) $H_{2} S O_{4}$ is an oxidising agent

D) $H_{2} S O_{4}$ forms complex

Show Answer

Answer:

Correct Answer: C

Solution:

$K I + H_{2} S O_{4} \to K H S O_{4} + H I$ HI is formed but it is further oxidised by conc. $H_{2} S O_{4}$ into $I_{2}$ $2 H I + H_{2} S O_{4} \to 2 H_{2} O + \underset{Violet vapour}{I_{2} + S O_{2}} ↑$

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P-Block Elements Ques 128

Question: HI cannot be prepared by the action of conc. H2SO4 on KI because

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Question: $H I$ cannot be prepared by the action of conc. $H_{2} S O_{4}$ on $K I$ because