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A . HCl和NaOH反应的中和热△H=-57.3kJ·mol−1 , 则H2SO4和Ca(OH)2反应的中和热△H=2×(-57.3)kJ·mol−1
B . 甲烷的标准燃烧热ΔH=-890.3kJ·mol−1 , 则CH4(g)+2O2(g)=CO2(g)+2H2O(g) ΔH<-890.3kJ·mol−1
C . 已知:500℃、30MPa下,N2(g)+3H2(g) 2NH3(g) ΔH=-92.4kJ·mol−1;将1.5molH2和过量的N2在此条件下充分反应,放出热量46.2kJ
D . CO(g)的燃烧热是283.0kJ·mol−1 , 则2CO2(g) =2CO(g)+O2(g)反应的△H=+566.0 kJ·mol−1
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