Light blue colour of nitrous acid is due to dissolved:

O_{2}

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N_{2}

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N_{2} O

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N_{2} O_{3}

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Solution

The correct option is D $N_{2} O_{3}$
Nitrous acid (molecular formula $H N O_{2}$ ) is a weak and monobasic acid known only in solution and in the form of nitrite salts.
When cold, dilute solutions of nitrite ion, ${N O}_{2}^{-}$ are carefully acidified, a light blue solution of nitrous acid is produced. Free nitrous acid is unstable and decomposes rapidly. It can be produced by dissolving dinitrogen trioxide in water according to the equation:
$N_{2} O_{3} + H_{2} O ⟶ 2 H N O_{2}$
Hence, Light blue colour of nitrous acid is due to dissolved $N_{2} O_{3}$

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Similar questions

The possible mechanism for the reaction:

$2 H_{2 +} 2 N O \to N_{2} + 2 H_{2} O$ is

$(i) 2 N O ⇌ N_{2} O_{2} (i i) N_{2} O_{2} + H_{2} \to N_{2} O + H_{2} O (slow) (i i i) N_{2} O + H_{2} \to N_{2} H_{2} O (fast)$ What is (i) the rate law for the reaction (ii) the order of the reaction?

$N_{2}$ and $O_{2}$ are converted into monocations, $N_{2}^{+}$ and $O_{2}^{+}$ respectively. Which of the following is wrong ?

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Q. Consider the reaction:

N O_{2} ⇌ \frac{1}{2} N_{2} + O_{2}, K_{1}

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