已知：2CO
(g)＋O2(g)===2CO2(g)；ΔH＝－566 kJ·mol－1
N2(g)＋O2(g)===2NO(g)；ΔH＝＋180 kJ·mol－1
则2CO(g)＋2NO(g)===N2(g)＋2CO2(g)的ΔH是( )
A．－3 86 kJ·mol－1 |
B．＋386 kJ·mol－1 |
| C．－746 kJ·mol－1 | D．＋7 46 kJ·mol－1 |
已知：2CO(g)＋O2(g)===2CO2(g)；ΔH＝－566 kJ·mol－1
N2(g)＋O2(g)===2NO(g)；ΔH＝＋180 kJ·mol－1
则2CO(g)＋2NO(g)===N2(g)＋2CO2(g)的ΔH是( )
| A．－386 kJ·mol－1 |
B．＋386 kJ·mol－1 |
| C．－746 kJ·mol－1 | D．＋746 kJ·mol－1 |
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