问题:
【题文】下列各组物质中,都含有少量的杂质,分别用什么试剂可以将括号内的杂质除去(只要求写所加物质的名称或方法及化学方程式)
(l)CO(CO 2) ____________;_______________________________________________
(2)CO 2(CO) ;_______________________________________________
(3)CaO(CaCO 3) ;_______________________________________________
【题文】下列各组物质中,都含有少量的杂质,分别用什么试剂可以将括号内的杂质除去(只要求写所加物质的名称或方法及化学方程式)
(l)CO(CO 2) ____________;_______________________________________________
(2)CO 2(CO) ;_______________________________________________
(3)CaO(CaCO 3) ;_______________________________________________
(l)CO(CO 2) ____________;_______________________________________________
(2)CO 2(CO) ;_______________________________________________
(3)CaO(CaCO 3) ;_______________________________________________
参考答案: