题目内容
某温度下，炭和水蒸汽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[H 2]=1.9mol/L，[CO 2]=0.9mol/L，则CO的浓度为( )
2021-09-18
A.0.1mol/L
B.0.9mol/L
C.1.8mol/L
D.1.9mol/L
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