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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．-386kJ·mol-1 B．+386kJ·mol-1
C．-746kJ·mol-1 D．+746kJ·mol-1
查看习题详情和答案>>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 |
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．-386kJ·mol-1 B．+386kJ·mol-1
C．-746kJ·mol-1 D．+746kJ·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．-386kJ·mol-1 | B．+386kJ·mol-1 |
| C．-746kJ·mol-1 | D．+746kJ·mol-1 |