Which series of reactions correctly represents chemical reactions related to iron and its compounds?
(b) is the correct answer because all the steps are that of iron extraction in a blast furnace.
(a) is wrong because
FeCl3+12O2Δ−→FeOCl+Cl2↑
(c) is wrong because Fe2(SO4)3Δ−→Fe2O3(s)+3SO3↑
(d) is wrong because 2FeSO4Δ−→Fe2O3(s)+SO2↑+SO3↑