已知下列热化学方程式:
(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)+
O2(g)H2O(l) ΔH3=-285.8 kJ·mol-1。
则反应2C(s)+2H2(g)+O2(g)CH3COOH(l)的ΔH为( )
A.-488.3 kJ·mol-1 B.-244.15 kJ·mol-1
C.+488.3 kJ·mol-1 D.+244.15 kJ·mol-1