A.
已知H + (aq)+OH - (aq)=H 2 O(l) ΔH=-57.3 kJ·mol -1 ,则H 2 SO 4 和Ba(OH) 2 反应的反应热ΔH=2×(-57.3) kJ·mol -1
B.
燃料电池中将甲醇蒸气转化为氢气的热化学方程式是CH 3 OH(g)+ O 2 (g)===CO 2 (g)+2H 2 (g)ΔH=-192.9 kJ·mol -1 ,则CH 3 OH(g)的燃烧热为192.9 kJ·mol -1
C.
H 2 (g)的燃烧热是285.8 kJ·mol -1 ,则2H 2 O(g)===2H 2 (g)+O 2 (g) ΔH=571.6 kJ·mol -1
D.
葡萄糖的燃烧热是2 800 kJ·mol -1 ,则 C 6 H 12 O 6 (s)+3O 2 (g)===3CO 2 (g)+3H 2 O(l) ΔH=-1 400 kJ·mol -1