When a green iron salt is heated strongly, its colour finally changes to brown name the iron salt

(a) Ferrous sulphate.

(b) Decomposition reaction.

Anhydrous ferrous sulphate is formed when a ferrous sulphate crystal loses water. It decomposes into ferric oxide, sulphur dioxide, and sulphur trioxide.

(c) 2FeSO4→ Fe2O3 + SO2+ SO3

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When a green iron salt is heated strongly, its colour finally changes to brown and odour of burning sulphur is given out. a Name the iron salt. b Name the type of reaction that takes place during the heating of iron salt. c Write a chemical equation for the reaction involved.


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