![\[\left( \mathbf{a} \right)\text{ }\mathbf{FeS}{{\mathbf{O}}_{\mathbf{4}}}\to \text{ }\mathbf{F}{{\mathbf{e}}_{\mathbf{2}}}{{\mathbf{O}}_{\mathbf{3}}}~+\text{ }\mathbf{S}{{\mathbf{O}}_{\mathbf{2}}}~+\text{ }\mathbf{S}{{\mathbf{O}}_{\mathbf{3}}}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-39a391e2efc0e61cf16f7278f41bd043_l3.png "Rendered by QuickLaTeX.com")
![\[\left( \mathbf{b} \right)\text{ }\mathbf{Pb}{{\left( \mathbf{N}{{\mathbf{O}}_{\mathbf{3}}} \right)}_{\mathbf{2}}}\left( \mathbf{s} \right)\text{ }\to \mathbf{PbO}\left( \mathbf{s} \right)\text{ }+\text{ }\mathbf{N}{{\mathbf{O}}_{\mathbf{2}}}\left( \mathbf{g} \right)\text{ }+\text{ }{{\mathbf{O}}_{\mathbf{2}}}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-d80c527fb417f074f02fec6a6299e69f_l3.png "Rendered by QuickLaTeX.com")
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.