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Balance the following chemical equations:

    \[\left( \mathbf{a} \right)\text{ }\mathbf{FeS}{{\mathbf{O}}_{\mathbf{4}}}\to \text{ }\mathbf{F}{{\mathbf{e}}_{\mathbf{2}}}{{\mathbf{O}}_{\mathbf{3}}}~+\text{ }\mathbf{S}{{\mathbf{O}}_{\mathbf{2}}}~+\text{ }\mathbf{S}{{\mathbf{O}}_{\mathbf{3}}}\]


    \[\left( \mathbf{b} \right)\text{ }\mathbf{Pb}{{\left( \mathbf{N}{{\mathbf{O}}_{\mathbf{3}}} \right)}_{\mathbf{2}}}\left( \mathbf{s} \right)\text{ }\to \mathbf{PbO}\left( \mathbf{s} \right)\text{ }+\text{ }\mathbf{N}{{\mathbf{O}}_{\mathbf{2}}}\left( \mathbf{g} \right)\text{ }+\text{ }{{\mathbf{O}}_{\mathbf{2}}}\]

CBSE | Chemical Reactions and Equations | Chemistry | Class 10 | Lakhmir Singh
Balance the following chemical equations:

    \[\left( \mathbf{a} \right)\text{ }\mathbf{FeS}{{\mathbf{O}}_{\mathbf{4}}}\to \text{ }\mathbf{F}{{\mathbf{e}}_{\mathbf{2}}}{{\mathbf{O}}_{\mathbf{3}}}~+\text{ }\mathbf{S}{{\mathbf{O}}_{\mathbf{2}}}~+\text{ }\mathbf{S}{{\mathbf{O}}_{\mathbf{3}}}\]


    \[\left( \mathbf{b} \right)\text{ }\mathbf{Pb}{{\left( \mathbf{N}{{\mathbf{O}}_{\mathbf{3}}} \right)}_{\mathbf{2}}}\left( \mathbf{s} \right)\text{ }\to \mathbf{PbO}\left( \mathbf{s} \right)\text{ }+\text{ }\mathbf{N}{{\mathbf{O}}_{\mathbf{2}}}\left( \mathbf{g} \right)\text{ }+\text{ }{{\mathbf{O}}_{\mathbf{2}}}\]

The given chemical equations have been balanced as follows:

(a) 2FeSO4→ Fe2O3 + SO2 + SO3

In this reaction, Ferrous sulphate decomposes to give Ferric oxide. Sulphur dioxide and sulphur trioxide.

(b) 2Pb(NO3)2(s) → 2PbO(s) + 4 NO2(g) + O2

In this reaction, lead nitrate decomposes to give Lead oxide, Nitrous oxide and Oxygen.

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