(1)Fe 2O 3+3CO
2Fe+3CO 2(2)2CH 3OH+3O 2
4H 2O+2CO 2(3)Fe 2O 3+3H 2SO 4==Fe 2(SO 4) 3+3H 2O
(4)2KClO 3
2KCl+3O 2↑