Question

On heating white coloured powder of lead nitrate in boiling tube lead oxide, oxygen gas and a brown coloured gas x is formed write the balanced equation of the reaction

Answer 1

2Pb(NO3)2 —heat——> 2PbO + 4NO2 + O2


X is NO2.


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Answer 2

The balanced chemical equation is: $2Pb(NO_3)_2\rightarrow 2PbO+4NO_2+O_2$

Explanation:

Chemical formula of the given compound which is lead nitrate is $Pb(NO_3)_2$

On heating the compounds undergo decomposition and leads to formation of  two or more products.

When lead nitrate which is white in colour  is heated, it decomposes into its oxide, a brown gas and also a colorless gas is also formed. The chemical equation for the dissociation of lead nitrate follows:

$2Pb(NO_3)_2\rightarrow 2PbO+4NO_2+O_2$

Thus the colored gas X is $NO_2$

Learn more about decomposition of lead nitrate:

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