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ΔH.1>0，ΔH.3<0 ΔH.2>0，ΔH.4>0 ΔH.1＝ΔH.2＋ΔH.3 ΔH.3＝ΔH.4＋ΔH.5
△H1＞0，△H3＜0
△H2＞0，△H4＞0
△H1＝△H2＋△H3
△H3＝△H4＋△H5
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
ΔH1>0，ΔH3<0 ΔH2>0，ΔH4>0 ΔH1=ΔH2+ΔH3 ΔH3=ΔH4+ΔH5
CH3OH(l)的燃烧热是|ΔH1/2| CO的燃烧热是|ΔH2/2| CH3OH(l)＋O2(g)= CO(g) + 2H2O(l)ΔH. =ΔH1-ΔH2+4ΔH3 ΔH3>0
CH3OH(l)＋
O2(g)===CO2(g)＋2H2O(l) ΔH ＝＋725.8 kJ/mol 2CH3OH(l)＋3O2(g)===2CO2(g)＋4H2O(l) ΔH ＝－1452 kJ/mol 2CH3OH(l)＋3O2(g)===2CO2(g)＋4H2O (l) ΔH ＝－725.8 kJ/mol 2CH3OH(l)＋3O2(g)===2CO2(g)＋4H2O(l) ΔH ＝＋1452 kJ/mol
△H.1＞0，△H.3＜0 △H.2＞0，△H.4＞0 △H.1=△H.2+△H.3 △H.3=△H.4+△H.5
CH3OH（l）+
O2（g）===CO2（g）+2H2O（l）；ΔH=+725.8 kJ/mol 2CH3OH（l）+3O2（g）===2CO2（g）+4H2O（l）；ΔH=－1452 kJ/mol 2CH3OH（l）+3O2（g）===2CO2（g）+4H2O（l）；ΔH=－725.8 kJ/mol 2CH3OH（l）+3O2（g）===2CO2（g）+4H2O（l）；ΔH=+1452 kJ/mol
△H1＞0，△H3＜0 △H2＞0，△H4＞0
△H1＝△H2＋△H3 △H3＝△H4＋△H5
根据反应①，64gCH3OH完全燃烧放出的热量为98kJ
反应①中的能量变化如上图所示
CH3OH转变成H2的过程一定要吸收能量
根据②推知反应CH3OH(l)＋1/2O2(g)＝CO2(g)＋2H2(g)的△H＞－192.9kJ·mol－1
△H1>0，△H3<0 △H2>0，△H4>0 △H1=△H2+△H3 △H3=△H4+△H5
CH4 ( g ) + 3/2O2 ( g ) = 2H2O ( l ) + CO ( g ) △H1 S ( s ) + 3/2O2 ( g ) = SO3 ( s ) △H2 C6H12O6 ( s ) + 6O2 ( g ) = 6CO2 (g) + 6H2O ( l ) △H3 2CO ( g ) + O2 ( g ) = 2CO2 ( g ) △H4
ΔH1>0, ΔH3<0 ΔH2>0，ΔH4>0 ΔH1＝ΔH2＋ΔH3 ΔH3＝ΔH4＋ΔH5
△H1＞0，△H3＜0 △H1＞△H2
△H1=△H2+△H3 △H3=△H4+△H5
△H1＞0，△H3＜0 △H2＞0，△H4＞0 △H1＝△H2＋△H3 △H3＝△H4＋△H5
△H1＞0，△H3＜0 △H2＞0，△H4＞0 △H1＝△H2＋△H3 △H3＝△H4＋△H5
CH4(g)+3/2O2(g)=2H2O(g)+CO(g) △H1 S(s)+3/2O2(g)=SO3(s) △H2 C6H12O6(s)+6O2(g)=6CO2(g)+6H2O(l) △H3 2CO(g)+O2(g)=2CO2(g) △H4
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