Which of the following will give $N O_{2}$ when heated ?

L i N O_{3}

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N a N O_{3}

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A l (N O_{3})_{2}

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A g N O_{3}

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Solution

The correct options are
B $A g N O_{3}$
C $L i N O_{3}$
D $A l (N O_{3})_{2}$
Reactions:
$2 A g N O_{3} (s) \to 2 A g (s) + O_{2} (g) + 2 N O_{2} (g)$

$2 N a N O_{3} \to 2 N a N O_{2} + O_{2}$

$4 A l (N O_{3})_{2} (s) \to 2 A l_{2} O_{3} (s) + O_{2} (g) + 8 N O_{2} (g)$

$4 L i N O_{3} \to 2 L i_{2} O + 4 N O_{2} + O_{2}$ .

Except $N a N O_{3}$ all of them gives $N O_{2}$ gas

Suggest Corrections

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6

mol of a mixture containing same number of moles of

N a N O_{3}, N H_{4} N O_{3}, L i N O_{3}, C a (N O_{3})_{2}, P b (N O_{3})_{2}

and

A g N O_{3}

, was heated strongly. Total number of moles of

O_{2} (g)

evolved is :

4 mol of a mixture containing same number of moles each of $N a N O_{3}, N H_{4} N O_{3}, L i N O_{3}, C a (N O_{3})_{2}, P b (N O_{3})_{2}, A g N O_{3}, H g_{2} (N O_{3})_{2} a n d Z n (N O_{3})_{2}$ was heated strongly. Total number of moles of $N O_{2 (g)}$ evolved is___