题目内容
现有3个体积相等的密闭容器。都进行下列反应：CO 2(g)＋H 2(g) 
H 2O(g)＋CO(g)，反应所处的温度相同，但起始浓度不同。其中甲：CO 2 = H 2 =" a" mol；乙：CO 2 =" a" mol ，H 2 =" 2a" mol ；丙：CO 2 =H 2 =H 2O(g)=" a" mol 。达到平衡时，CO 2的物质的量由大到小的顺序是
2021-09-18
A.甲>乙>丙
B.甲>丙>乙
C.丙>甲>乙
D.乙>甲>丙
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