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Byju's Answer

Standard XII

Chemistry

Oxides of Nitrogen

A gas X is ob...

Question

A gas (X) is obtained when copper reacts with dilute HN03. The gas thus formed reacts with oxygen to give brown fumes of (Y). (Y) when dissolved in water gives an important acid (Z) and the gas (X). X, Y, and Z respectively are:

NO;

N O_{2}

;

H N O_{3}

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N O_{2}

; NO;

H N O_{3}

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N_{2} O

; NO; H

N O_{2}

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NO;

N_{2} O

;

H N O_{3}

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Solution

The correct option is A NO; $N O_{2}$ ; $H N O_{3}$
In diluted $H N O_{3}$ ,
$3 C u (s) + 8 H N O_{3} (a q) ⟶ 3 C u (N O_{3})_{2} (a q) + 2 N O (X) (g) + 4 H_{2} O (l)$
$2 N O (X) (g) + O_{2} (g) ⇌ 2 N O_{2} (Y) (g)$
$3 N O_{2} (Y) + H_{2} O ⟶ 2 H N O_{3} (Z) + N O (X)$

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A gas (X) is obtained when copper reacts with dilute HN03. The gas thus formed reacts with oxygen to give brown fumes of (Y). (Y) when dissolved in water gives an important acid (Z) and the gas (X). X, Y, and Z respectively are:

The correct option is A NO; NO2; HNO3In diluted HNO3,3Cu(s)+8HNO3(aq)⟶3Cu(NO3)2(aq)+2NO(X)(g)+4H2O(l)2NO(X)(g)+O2(g)⇌2NO2(Y)(g)3NO2(Y)+H2O⟶2HNO3(Z)+NO(X)

The correct option is A NO; $N O_{2}$ ; $H N O_{3}$
In diluted $H N O_{3}$ ,
$3 C u (s) + 8 H N O_{3} (a q) ⟶ 3 C u (N O_{3})_{2} (a q) + 2 N O (X) (g) + 4 H_{2} O (l)$
$2 N O (X) (g) + O_{2} (g) ⇌ 2 N O_{2} (Y) (g)$
$3 N O_{2} (Y) + H_{2} O ⟶ 2 H N O_{3} (Z) + N O (X)$