1.下列关于热化学反应的描述中正确的是( )
A.HCl和NaOH反应的中和热△H=-57.3 kJ·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=-890.3 kJ·mol−1
则CH4(g)+2O2(g)=CO2(g)+2H2O(g) ΔH <-890.3 kJ·mol−1
C.已知:500℃、30MPa下,N2(g)+3H2(g) ? 2NH3(g) ΔH=-92.4kJ·mol-1
将1.5 mol H2和过量的N2在此条件下充分反应,放出热量46.2 kJ
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