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题图的是
A.CO2(g)+2NH3(g)⇌CO(NH2)2(s)+H2O(g);△H<0 |
B.CO2(g)+H2(g)⇌CO(g)+H2O(g);△H>0 |
C.CH3CH20H(g)⇌CH2=CH2(g)+H2O(g);△H>0 |
D.2C6H5CH2CH3(g)+O2(g)⇌2C6H5CH=CH2(g)+2H2O(g);△H<0 |
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题图的是
A.CO2(g)+2NH3(g)⇌CO(NH2)2(s)+H2O(g);△H<0 |
B.CO2(g)+H2(g)⇌CO(g)+H2O(g);△H>0 |
C.CH3CH20H(g)⇌CH2=CH2(g)+H2O(g);△H>0 |
D.2C6H5CH2CH3(g)+O2(g)⇌2C6H5CH=CH2(g)+2H2O(g);△H<0 |