Question

Write a balanced chemical equation to represent decomposition of lead nitrate on heating. What are lie own fumes due to?

Answer 1

2 Pb(NO3)2 (s) → 2 PbO (s) + 4 NO2 (g) + O2 (g)
This reaction also produces toxic fumes of lead and nitrogen dioxide.
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Answer 2

Balanced chemical equation representing the decomposition of lead nitrate on heating.

• Lead nitrate is a crystalline colorless solid with chemical formula $P b\left(N O_{3}\right)_{2}$.
• When it is heated it decomposes to form lead oxide, nitrogen dioxide and oxygen as shown in the given chemical equation:
• $P b\left(N O_{3}\right)_{2} \stackrel{\text { heat }}{\longrightarrow} P b O+N O_{2}+O_{2}$.
• When the equation is balanced on both the reactant as well as the product side, it gives:
• $2 P b\left(N O_{3}\right)_{2} \stackrel{\text { heat }}{\longrightarrow} 2 P b O+4 N O_{2}+O_{2}$.
• The brown fumes are due to the formation of nitrogen dioxide gas.

Learn more about decomposition of lead nitrate on heating

What happens when lead nitrate is heated

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Lead nitrate on heating gives brown colour fumes.

(a) identity the type of reaction.

(b) write the equation.

(c) why the brown colour fumes are observed.

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