Which of the following salt does not give $N O_{2}$ gas on heating?

P b (N O_{3})_{2}

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Z n (N O_{3})_{2}

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A g N O_{3}

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K N O_{3}

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Solution

The correct option is D $K N O_{3}$
Reactions are:

$A g N O_{3} b e l o w - -- \to 500^{o} C N O_{2} + O_{2}$ + $A g$
$Z n (N O_{3})_{2} Δ - \to Z n O + N O_{2} ↑ + \frac{1}{2} O_{2} ↑$
$P b (N O_{3})_{2} Δ - \to P b ↓ + 2 N O_{2} ↑ + O_{2} ↑$
$K N O_{3} b e l o w - -- \to 500^{o} C K N O_{2} + \frac{1}{2} O_{2}$

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Similar questions

N O_{2}

N H_{4} N O_{3}, K N O_{3}, N a N O_{2}, P b (N O_{3})_{2}, A g N O_{3}

Choose the correct answer :

(a) The nitrate salt which does not give a mixture of $N O_{2}$ and $O_{2}$ on heating is :

(i) $A g N O_{3}$ , (ii) $K N O_{3}$ ,

(iii) $C u (N O_{3})_{3}$ , (iv) $Z n (N O_{3})_{2}$ .

(b) The chemical used in the brown ring test is :

(i) $C u S O_{4}$ , (ii) $F e S O_{4}$

(iii) $F e_{2} (S O_{4})_{3}$ (iv) $Z n S O_{4}$ .

(i) NO, (ii) $N_{2} O,$

(iii) $N O_{2}$ (iv) $N_{2} O_{5}$ .

K N O_{3}, A g N O_{3}, Z n (N O_{3})_{2}, C a (N O_{3})_{2}

P b (N O_{3})_{2}

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