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Question

2Pb(NO3)22PbO+X+O2

What is X in the given balanced chemical equation?

A
4NO
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B
4NO2
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C
2PbNO2
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D
N2O5
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Solution

The correct option is D 4NO2
Chemical equation is given by:

2Pb(NO3)2(s)Δ2PbO(s)+4NO2(g)+O2(g)

When heated, lead(II) nitrate crystals decompose to lead(II) oxide, oxygen and we can see brown fumes of nitrogen dioxide.

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