已知:A是红色粉末,B、C是氧化物,D、I是常见金属,E为稀盐酸,H

已知:A是红色粉末,BC是氧化物,DI是常见金属,E为稀盐酸,H为浅绿色溶液。它们之间的转化关系如下:

 

A A:固体

:固体

 

高温

 

 

 


请回答

(1)写出下列物质的化学式:A        ▲       B        ▲       

(2)上述转化①②③中,属于置换反应的有           ▲              

(3)为了安全,点燃G气体之前要                ▲                 

(4)写出反应的化学方程式                  ▲                   

答案

(1)Fe2O3CO  (2) ②③  (3)检验氢气的纯度  (4) Fe + CuCl2 ==== FeCl2 + Cu

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