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2 g of green coloured crystals of ferrous sulphate are heated in a dry boiling tube. Name the type of chemical reaction taking place. Write the balanced chemical equation for the reaction. Is this an exothermic or an endothermic reaction ?
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• Thermal decomposition reaction
• $\ce{2FeSO4(s) ->[heat] Fe2O3(s) + SO2(g) + SO3(g)}$
(deduct ½ mark if no / incorrect balancing)
• Endothermic reaction
• $\ce{2FeSO4(s) ->[heat] Fe2O3(s) + SO2(g) + SO3(g)}$
(deduct ½ mark if no / incorrect balancing)
• Endothermic reaction