一定条件下，下列反应中水蒸气含量随反应时间的变化趋势符合下图的是 
A．CO2(g)＋2NH3(g) CO(NH2)2(s)＋H2O(g)ΔH＜0 |
| B．CO2(g)＋H2(g)CO(g)＋H2O(g)ΔH＞0 |
| C．CH3CH2OH(g)CH2==CH2(g)＋H2O(g)ΔH＞0 |
| D．2C6H5CH2CH3(g)＋O2(g)2C6H5CH==CH2(g)＋2H2O(g)ΔH＜0 |
相关知识点
一定条件下，下列反应中水蒸气含量随反应时间的变化趋势符合下图的是
| A．CO2(g)＋2NH3(g)CO(NH2)2(s)＋H2O(g)ΔH＜0 |
| B．CO2(g)＋H2(g)CO(g)＋H2O(g)ΔH＞0 |
| C．CH3CH2OH(g)CH2==CH2(g)＋H2O(g)ΔH＞0 |
| D．2C6H5CH2CH3(g)＋O2(g)2C6H5CH==CH2(g)＋2H2O(g)ΔH＜0 |
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