试题与答案

一定条件下,有如下反应: 2CO (g) + O2(g)=2CO2(g)ΔH1=

题型:填空题

题目:

一定条件下,有如下反应:

2CO (g) + O2(g)=2CO2(g)         ΔH1=" -" 566.0kJ·mol-1

3Fe(s) +2O2(g)=Fe3O4 (s)    ΔH2=-1118.3kJ·mol-1

Fe3O4(s)+4CO(g)3Fe(s) +4CO2 (g)    ΔH

(1)试计算,ΔH3 =                       

(2)已知1100℃时,反应Fe3O4(s)+4CO(g) 3Fe(s)+4CO2 (g)  ΔH3的化学平衡常数为4.8×10-3。若在1100℃时,测得高炉中c(CO2)=0.020mol·L-1,c(CO)=0.10mol·L-1,此时该反应        (填“是”或“否”)处于平衡状态,理由是                                                                     ,此时υ     υ(填“>”、“<”或“=”)。

(3)下列试剂可以用于吸收工业尾气中的CO2的是             

a.(NH4)2CO3溶液     b.氨水      c.NaHSO3溶液      d.CaCl2溶液

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A

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