A.1mol氢气和1mol碘蒸气完全反应能放出52kJ的热量 | ||||
B.1个氢分子和1个碘分子完全反应需要吸收52kJ的热量 | ||||
C.1molH2(g)与1molI2(g)完全反应生成2mol的HI气体需吸收52kJ的热量 | ||||
D.
|
1 |
2 |
1 |
2 |
25 |
2 |
A.H2(g) | B.CO(g) | C.C8H18(l) | D.CH4(g) |
A.2H2(g)+O2(g)═2H2O(1)△H=-285.8kJ/mol | ||
B.2H2(g)+O2(g)═2H2O(1)△H=+571.6kJ/mol | ||
C.2H2(g)+O2(g)═2H2O(g)△H=-571.6kJ/mol | ||
D.H2(g)+
|
© 2017-2019 超级试练试题库,All Rights Reserved.