Given the following data:
2C(s) + 3H2(g) + 1/2O2(g) → CH3CH2OH(l) ΔH°=-278.0 kJ
CH3CH2OH(l) + O2(g) → CH3COOH(l) + H2O(l) ΔH°=-492.0 kJ
4C(s) + 3H2(g) + 3/2O2(g) → (CH3CO)2O(l) ΔH°=-625.0 kJ
H2(g) + 1/2O2(g) → H2O(l) ΔH°=-286.0 kJ
calculate ΔH° for the reaction:
2CH3COOH(l) → (CH3CO)2O(l) + H2O(l)