Ferrous sulphate when heated decomposes with the evolution of gas having a characteristic odour of burning sulphur. Write the chemical reaction involved and identify the type of reaction.

2 F e S O_{4} Δ - \to F e_{2} O_{3} + S O_{2} + S O_{3}

, Displacement reaction

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2 F e S O_{4} Δ - \to F e_{2} O_{3} + 2 S O_{2}

, Decomposition reaction

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2 F e S O_{4} Δ - \to F e_{2} O_{3} + 2 S O_{2}

, Displacement reaction

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2 F e S O_{4} Δ - \to F e_{2} O_{3} + S O_{2} + S O_{3}

, Decomposition reaction

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Solution

The correct option is D $2 F e S O_{4} Δ - \to F e_{2} O_{3} + S O_{2} + S O_{3}$ , Decomposition reaction
$2 F e S O_{4} △ - \to F e_{2} O_{3} + S O_{2} + S O_{3}$ , it is an example of decomposition reaction in which ferrous sulphate decomposes on heating to ferric oxide.

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2 S O_{2} + O_{2} \to 2 S O_{3} ↑

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2 {S O}_{2} + O_{2} \to {S O}_{3}

{S O}_{3}

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