.已知:2H 2(g)+O 2(g)===2H 2O(l) Δ H=-571.6 kJ·mol -12CH 3OH(l)+3O 2(g)===2CO 2(g)+4H 2O(l) Δ H=-1452 kJ·mol -1H +(aq)+OH -(aq)===H 2O(l) Δ H=-57.3 kJ·mol -1下列说法正确的是 A.H2(g)的燃烧热为571.6 kJ·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.1/2H2SO4(aq)+1/2Ba(OH)2(aq)===1/2BaSO4(s)+H2O(l) ΔH=-57.3 kJ·mol-1 | D.3H2(g)+CO2(g)=CH3OH(l)+H2O(l) ΔH=+135.9 kJ·mol-1 |
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