Case 1.Iron reacts with dilute sulphuric ACID to form ferrous sulphate.The balanced equation is:FE +H2SO4 -> FeSO4 + H2Case 2.Iron reacts with conc. Sulphuric acid to GIVE ferric sulphate.Thus the balanced equation looks like :3FE +8H2SO4 -> FeSO4 + Fe2(SO4)3 + 4SO2 +8H2O
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