已知:Ⅰ.N2(g)+O2(g)=2NO(g) ∆H=+180.5 kJ·mol-1
Ⅱ.2NO(g)+O2(g)=2NO2(g) ∆H=-167.7 kJ·mol-1
Ⅲ.4NH3(g)+5O2(g)=4NO(g)+6H2O(g) ∆H=-809.6 kJ·mol-1
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