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Decomposition Reactions

A red brown g...

Question

A red brown gas is released on heating lead nitrate. It is an example of decomposition reaction.

A

Combination reaction

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B

Oxidation reaction

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Solution

The correct option is A
Combination reaction

The following decomposition reaction takes place on heating lead nitrate:
$2 P b ({N O}_{3})_{2} (s) \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)$

The red brown gas released is $N O_{2}$ .
A decomposition reaction is where one reactant is broken into multiple simple products.

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Q. A student carries out the decomposition reaction of lead nitrate to form three simpler substances. One of the substances formed during this reaction is a brown coloured gas whereas another substance formed is a yellow coloured solid.
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