Question

Explain by taking example of decomposition of lead nitrate and ferrous sulphate?

Answer 1

Answer:

When lead(II) nitrate is heated, it decomposes into lead (II) oxide, nitrogen dioxide and oxygen. The balanced chemical equation for this reaction is

2Pb(NO

3

)

2

(s)→2PbO(s)+4NO

2

+O

2

(g)

Lead (II) nitrate is also called lead nitrate or plumbous nitrate. The heating of lead nitrate does produce toxic fumes of lead and nitrogen dioxide. The temperature at which this compound decomposes is 878 degrees Fahrenheit.

Explanation:

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Answer 2

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When lead nitrate is heated, it breaks down into lead monoxide, nitrogen dioxide, and oxygen.

2Pb(NO3)2 → 2PbO+4NO2+O2.

Decomposition of ferrous sulphate is an endothermic reaction as it involves absorption of heat to form ferric oxide (Fe2O3), sulphur dioxide (SO2) & sulphur trioxide (SO3).

2FeSO4 → Fe2O3 + SO2 + SO3

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