下列关于热化学反应的描述中正确的是
A.已知H+(aq)+OH-(aq)== H2O(l)ΔH=-57.3 kJ·mol-1,则H2SO4和Ba(OH)2反应的反应热ΔH=2×(-57.3) kJ·mol-1 |
B.葡萄糖的燃烧热是2800 kJ·mol-1,则1/2C6H12O6(s)+3O2(g)==3CO2(g)+3H2O(l)ΔH=1400 kJ/mol |
C.H2(g)的燃烧热是285.8 kJ·mol-1,则2H2O(g)==2H2(g)+O2(g)ΔH=+571.6 kJ·mol-1 |
D.燃料电池中将甲醇蒸气转化为氢气的热化学方程式是:CH3OH(g)+1/2O2(g)== CO2(g)+2H2(g)ΔH=-192.9 kJ·mol-1,CH3OH(g)的燃烧热为192.9 kJ·mol-1 |