SATHEE: P-Block Elements Ques 241

P-Block Elements Ques 241

Question: $H N O_{2}$ acts as

[AFMC 1992]

Options:

A) Oxidising agent

B) Reducing agent

C) Both a and b

D) Its solution is stable

Show Answer

Answer:

Correct Answer: C

Solution:

Nitrous acid behaves as reducing as well as an oxidising agent. It reduces potassium permanganate, potassium dichromate, $H_{2} O_{2}$ and other strong oxidising agents. It oxidises strong reducing agents such as hydroiodic acid, sulphurous acid etc. It oxidises $F e^{+ 2}$ into $F e^{+ 3}$ in acidic medium; $F e^{+ 2} + H N O_{2} + H^{+} \to F e^{+ 3} + N O + H_{2} O$ It reduces acidified $K M n O_{4}$ . $2 K M n O_{4} + 3 H_{2} S O_{4} + 5 H N O_{2} \to$ $K_{2} S O_{4} + 2 M n S O_{4} + 3 H_{2} O + 5 H N O_{3}$

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P-Block Elements Ques 241

Question: HNO2 acts as

Options:

Answer:

Solution:

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Question: $H N O_{2}$ acts as