题目内容
某温度下，C和水在密闭容器中发生下列反应：C(s)＋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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