(1)汽油将油污溶解后除去;洗涤剂使油污乳化后除去
(2)2HCl + Mg(OH) 2==== MgCl 2+ 2H 2O
(3)升高温度
(4)Fe 2O 3+ 3H 2SO 4=== Fe 2(SO 4) 3+ 3H 2O
(5)CaCO 3;CaCO 3+ 2HCl === CaCl 2+ H 2O + CO 2↑
(1)汽油将油污溶解后除去;洗涤剂使油污乳化后除去
(2)2HCl + Mg(OH) 2==== MgCl 2+ 2H 2O
(3)升高温度
(4)Fe 2O 3+ 3H 2SO 4=== Fe 2(SO 4) 3+ 3H 2O
(5)CaCO 3;CaCO 3+ 2HCl === CaCl 2+ H 2O + CO 2↑