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C.(s)+
O2(g)====CO(g);ΔH=-393.5 kJ·mol-1 2H2(g)+O2(g)====2H2O(g);ΔH=+571.6 kJ·mol-1 CH4(g)+2O2(g)====CO2(g)+2H2O(g);ΔH=-890.3 kJ·mol-1 C.6H12O6(s)+3O2(g)====3CO2(g)+3H2O(l);ΔH=-1 400 kJ·mol-1
CH4(g)＋2O2(g)＝CO2(g)＋4H2O(g) ΔH＝－890 kJ/mol CH4(g)＋2O2(g)＝CO2(g)＋2H2O(l) ΔH＝＋890 kJ/mol CH4(g)＋2O2(g)＝CO2(g)＋2H2O(l) ΔH＝－890 kJ/mol 
CH4(g)＋O2(g)＝CO2(g)＋H2O(l) ΔH＝－890 kJ/mol
放出的热量为（0.4Q1+0.1Q3）KJ 放出的热量为（0.4Q1+0.05Q2）KJ 放出的热量为（0.4Q1+0.05Q3）KJ △H2 <△H3
C.(s)+
O2(g)＝CO(g) △H= ―393.5 kJ/mol 2H2(g)+O2(g)＝2H2O(l) △H= +571.6 kJ/mol CH4(g)+2O2(g)＝CO2(g)+2H2O(g) △H= ―890.3 kJ/mol C.6H12O6(s) +6O2(g)＝6CO2(g)+6H2O(l) △H= ―2800 kJ/mol
2CH4( g)+4O2(g)=2CO2(g)+4H2O(1) △H = +890kJ·mol-1 CH4(g)+2O2(g)=CO2(g)+2H2O(g) △H = +890 kJ·mol-1 1／2CH4(g)+O2(g)=1／2CO2(g)+H2O(g) △H = —445 kJ·mol-1 CH4(g)+2O2(g)=CO2(g)+2H2O(1) △H = —890 kJ·mol-1
CH4(g)+2O2(g)=CO2(g)+2H2O(L) 2CH4(g)+4O2(g)=2CO2(g)+4 H2O(L) CH 4g+2O2(g)=CO2(g)+2H2O(g) 2CH4(g)+4O2(g)=2CO2(g)+4H2O(g)
H2(g) CO(g) C.8H18(l) CH4(g)
H2(g) CO(g) C.8H18(l) CH4(g)
放出的热量为（0.4Q1+0.05Q3）KJ/mol 放出的热量为（0.4Q1+0.05Q2）KJ/mol △H2 > △H3 △H2 <△H3
CH4 (g)+2NO2 (g)= N2 (g)+CO2 (g)+2H2O (l) △H.＝-867 kJ·mol-1 若0.2 mol CH4还原NO2至N2，在上述条件下放出的热量为173.4 kJ 1molCH4催化还原NOx为N2的过程中，若x=1.6，则转移的电子为3.2 mol 若用4.48L CH4还原NO2至N2，整个过程中转移的电子为3.2 mol
C.(s) + 1/2 O2(g) = CO(g) △H= －110.5 kJ/mol 2H2(g) + O2(g) = 2H2O(l) △H= －571.6kJ/mol CH4(g) + 2O2(g) = CO2(g) + 2H2O(g) △H= －802.3kJ/mol CO(g) + 1/2 O2(g) = CO2(g) △H= －283.0kJ/mol
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