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What are the products when ferrous sulphate is heated strongly, as shown in the chapter (2FeSO4 -> ... )?

Question
What are the products when ferrous sulphate is heated strongly, as shown in the chapter (2FeSO4 -> ... )?
Iron and sulphur only
Ferric oxide, sulphur dioxide, and sulphur trioxide
Iron oxide and water only
Ferrous oxide and hydrogen
Answer
Ferric oxide, sulphur dioxide, and sulphur trioxide
Detailed Explanation
Heating ferrous sulphate crystals decomposes them into ferric oxide (a solid), sulphur dioxide, and sulphur trioxide (both gases).
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