距今两千多年前,我国古代劳动人民已掌握了炼铁的技术,他们将炭

距今两千多年前,我国古代劳动人民已掌握了炼铁的技术,他们将炭不完全燃烧产生一氧化碳,在高温条件下利用一氧化碳将铁矿石中氧化铁还原为铁。请写出上述两个反应的化学方程式是:

                                                          

                                                          

答案

2C + O2   点燃  2CO                     

            Fe2O+ 3CO   高温  2Fe + 3CO2                 

相关题目

【甲】⑴至于负者歌于途,行者休于树,前者呼,后者应,
【甲】⑴至于负者歌于途,行者休于树,前者呼,后者应,伛偻提携,往来而不绝者,滁人游也。临溪而渔,溪深而鱼肥,酿泉为酒,泉香而酒洌,山
下列关于电解水的叙述中错误的是( ) A.为增强水的导电
下列关于电解水的叙述中错误的是( ) A.为增强水的导电性,常在水中加入一定量的硫酸钠或氢氧化钠B.电解水时和电源正、负极相连的极上产生
Your hair is too long. You should have it ______ tomorrow.      A. cuttin
Your hair is too long. You should have it ______ tomorrow.      A. cutting    B. to cut    C. cut    D. cuts
启蒙运动在反封建方面远远超过文艺复兴,主要表现在    
启蒙运动在反封建方面远远超过文艺复兴,主要表现在                  (    ) A.彻底批判专制主义、教权主义        B.为资本主义
已知集合,则集合(    ) A.         B.       C.
已知集合,则集合(    ) A.         B.       C.          D.
Keep your car in good          and it will drive long. A.instruction
Keep your car in good          and it will drive long. A.instruction              B.position     C.condition  D.situation
—Mum, you promised! —Well, ______. But it was you who didn’t keep your wor
—Mum, you promised! —Well, ______. But it was you who didn’t keep your word first. A. so was I         B. so did I          C. so I was       D. so I did
China has got a good ______ for fighting against the flu with its careful and sm
China has got a good ______ for fighting against the flu with its careful and smooth organization. A.reputation        B.influence        C.impression         D.knowledge

最新题目