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已知:2H2(g)+O2(g)=2H2O(l) ΔH=−571.6kJ·mol−1 2CH3OH(l)+3O2(g)=2CO2(g)+4H2O(l) ΔH=−1452kJ·mol−1 H+(aq)+O...
题目内容:
已知:2H2(g)+O2(g)=2H2O(l) ΔH=−571.6kJ·mol−1
2CH3OH(l)+3O2(g)=2CO2(g)+4H2O(l) ΔH=−1452kJ·mol−1
H+(aq)+OH−(aq)=H2O(l) ΔH=−57.3kJ·mol−1
下列说法正确的是
A.H2(g)的燃烧热为571.6kJ·mol−1
B.H2SO4(aq)+Ba(OH)2(aq)=BaSO4(s)+H2O(l) ΔH=−57.3 kJ·mol−1
C.3H2(g)+CO2(g)=CH3OH(l)+H2O(l) ΔH=+135.9 kJ·mol−1
D.等质量的H2(g)和CH3OH(l)完全燃烧,H2(g)燃烧放出的热量多
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