已知：2H₂(g)＋O₂(g) ===2H₂O(l)                   ΔH＝－571.6 kJ·mol^－1
2CH₃OH(l)＋3O₂(g) ===2CO₂(g)＋4H₂O(l)     ΔH＝－1452 kJ·mol^－1    
H^﹢(aq)＋OH^﹣(aq) ===H₂O(l)                ΔH＝－57.3 kJ·mol^－1
下列说法正确的是

A．H2(g)的燃烧热为142.9kJ·mol^－1

B．同质量的H2(g)和CH3OH(l)完全燃烧，H2(g)放出的热量多

C．H2SO4(aq)＋1/2Ba(OH)2(aq)＝1/2 BaSO4(s)＋H2O(l)ΔH＝－57.3 kJ·mol^－1

D．3H2(g)＋CO2(g) ===CH3OH(l)＋H2O(l)ΔH＝＋131.4 kJ·mol^－1