Find the number of nitrates which gives $N O_{2}$ gas on heating from the following:

Nitrogen dioxide is released on heating:

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

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Solution

Two nitrates $P b (N O_{3})_{2}$ and $A g N O_{3}$ gives $N O_{2}$ on heating.

$2 P b (N O_{3})_{2} \to 2 P b O + 4 N O_{2} + O_{2}$

$2 A g N O_{3} r e d h e a t - --- \to 2 A g + 2 N O_{2} + O_{2}$

Answer: $2$

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Similar questions

Priya is working on a nitrate which gives metal, $N O_{2}$ , and $O_{2}$ on heating. This nitrate is ___?

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) $N_{2} O_{5}$ .

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

N O_{2}

N O_{2}

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