2 g of ferrous sulphate crystals are heated in a boiling tube.
2 g of ferrous sulphate crystals are heated in a boiling tube.
(i) State the colour of ferrous sulphate crystals both before heating and after heating.
(ii) Name the gases produced during heating.
(iii) Write the chemical equation for the reaction.
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(i) Before heating: Pale green
After heating: Brown or reddish brown.
(ii) SO2 and SO3.
(iii) 2FeSO4(s) + Heat → Fe2O3(s) + SO2(g) SO3(g)
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