Which of the following salt gives nitrogen dioxide on heating?

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

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Z n S O_{4} . 7 H_{2} O

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N a H S O_{4}

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C u S O_{4} . 5 H_{2} O

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Solution

The correct option is D $P b (N O_{3})_{2}$
When heated, $l e a d (I I)$ nitrate crystals decompose to $l e a d (I I)$ oxide, oxygen and nitrogen dioxide.
$2 P b (N O_{3})_{2} (s) \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)$
Because of this property, lead nitrate is sometimes used in pyrotechnics such as fireworks.

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Similar questions

From the formula listed below, choose one, in each case, corresponding to the salt having the given description:-

$A g C l, C u C O_{3}, C u S O_{4} .5 H_{2} O, K N O_{3}, N a C l, N a H S O_{4}, P b (N O_{3})_{2} . Z n C O_{3}, Z n C O_{4} .7 H_{2} O .$

(a) an acid salt.

(b) an insoluble chloride.

(d) on heating, this salt changes from green to black.

(e) this salt given nitrogen dioxide on heating.

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}

(F e S O_{4} .7 H_{2} O, C u S O_{4} .5 H_{2} O, M n S O_{4} .4 H_{2} O, Z n S O_{4} .7 H_{2} O)

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