Question

下列说法正确的是

A．H2(g)+Br2(g)=2HBr(g) ΔH＝-72 kJ·mol-1其他相关数据如下表：

则表中a为230

B．已知：H+(aq)+OH-(aq)=H2O(l)ΔH＝-57.3kJ·mol-1

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

C．已知CH4(g)+2O2(g)=CO2(g)+2H2O(g)ΔH＝-802.33kJ·mol-1，则CH4的燃烧热为802.33kJ·mol-1

D．已知2C(s)+2O2(g)=2CO2(g)ΔH1，2C(s)+O2(g)=2CO(g)ΔH2，则ΔH1>ΔH2

Answer 1