工业上以大理石和赤铁矿为主要原料可以制取B和G,其转化关系如右

工业上以大理石和赤铁矿为主要原料可以制取BG,其转化关系如右图所示,

已知DG的主要成分为单质。试回答下列问题:

写出工业制取的两种物质的化学式:

B             G          

写出下列反应的化学方程式:

反应                          

反应                         

检验气体C                         

答案

(1)CaO Fe  (2)CO2+C2 CO  3CO+Fe2O32Fe+3CO2 

Ca(OH)2+CO2===CaCO3+H2O

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