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99 Percentile Qs Bank for JEE MainChemistryp Block Elements (Group 15, 16, 17 & 18)

A brown coloured mixture of two gases is obtained by the reduction of 6N nitric acid with metallic copper. This mixture on cooling condenses to a blue liquid which on freezing at - 3 0 o C gives a blue solid. The correct choice for blue liquid or solid is.

Options

  1. AIt is referred to as the anhydride of nitrous acid.
  2. BIt is an acidic oxide and hence dissolves in alkalies producing nitrites.
  3. CIt can also be prepared by the action of 50% H N O 3 on arsenious oxide and then cooling to 250 K.
  4. DAll of these.

Correct answer

D. All of these.

Step-by-step solution

(i) It is an acidic oxide and anhydride of HNO 2 N 2 O 3 + H 2 O → 2 H N O 2 (ii) With alkali it forms nitrites N 2 O 3 + 2 N a O H → 2 N a N O 2 + H 2 O (iii) It can also be prepared by the action of 50% H N O 3 on arsenious oxide and then cooling to 250 K All are correct here.

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