已知下列反应的反应热:
(1)CH3COOH(l)+2O2(g)=2CO2(g)+2H2O(l)ΔH1="-870.3" kJ·mol-1
(2)C(s)+O2(g)=CO2(g)ΔH2="-393.5" kJ·mol-1
(3)H2(g)+1/2O2(g)=H2O(l)ΔH3="-285.8" kJ·mol-1
则反应2C(s)+2H2(g)+O2(g)=CH3COOH(l)的反应热为( )
A.ΔH="-488.3" kJ·mol-1 |
B.ΔH="-244.15" kJ·mol-1 |
C.ΔH="-977.6" kJ·mol-1 |
D.ΔH="+488.3" kJ·mol-1 |