题目内容
某温度下碳和水蒸气在密闭容器中发生下列反应：C + H 2O(g) 
CO(g) + H 2(g) CO(g) + H 2O(g) 
CO 2(g) + H 2(g) 当反应达平衡时测得 c(H 2) ="1.9" mol/L， c(CO) =" 0.1" mol/L。则CO 2的浓度为
2021-09-18
A.0.1 mol/L
B.0.9 mol/L
C.1.8 mol/L
D.1.9 mol/L
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