试题与答案

某气体可能含有H2、CO、CO2和CH4四种气体中的一种或几种,为确认其组成,某

题型:填空题

题目:

某气体可能含有H2、CO、CO2和CH4四种气体中的一种或几种,为确认其组成,某同学取一定量该气体按如图所示装置进行实验(假设每步都充分反应和吸收)实验过程中装置A无明显变化;实验结束后装置C中增重5.4g,装置D中增重6.6g.

(1)装置B在该实验中的作用是                       

(2)装置D中发生反应的化学方程式为                        

(3)该气体可能的组成有             (填序号).

①CH4 ②CH4和H2  ③CH4和CO2  ④CH4和CO ⑤H2和CO ⑥CH4、H2和CO

答案:

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