已知下列反应的焓变
(1)CH3COOH(l)+2O2(g)==2CO2(g)+2H2O(l) △H1="-870.3kJ/mol "
(2)C(s)+O2(g) ==CO2(g) △H2=-393.5kJ/mol
(3) 2 H2(g)+O2(g) ==2H2O(l) △H3= -285.8kJ/mol
试计算反应2C(s)+2H2(g)+O2(g) ==CH3COOH(l)的焓变ΔH=
已知下列反应的焓变
(1)CH3COOH(l)+2O2(g)==2CO2(g)+2H2O(l) △H1="-870.3kJ/mol "
(2)C(s)+O2(g) ==CO2(g) △H2=-393.5kJ/mol
(3) 2 H2(g)+O2(g) ==2H2O(l) △H3= -285.8kJ/mol
试计算反应2C(s)+2H2(g)+O2(g) ==CH3COOH(l)的焓变ΔH=