25 ℃,101 k Pa时,强酸与强碱的稀溶液发生反应的中和热为57.3 kJ/mol,辛烷的燃烧热为5518 kJ/mol。下列热化学方程式书写正确的是
A.H+(aq) +1/2SO42— (aq)+1/2Ba2+(aq)+OH(aq)=1/2BaSO4(s)+HO(1);△H=57.3 kJ/mol |
B.KOH(aq)+1/2H2SO4(aq)=1/2K2SO4(aq)+H2O(l);△H=57.3kJ/mol |
C.C8H18(l)+ 25/2O2(g)=8CO2 (g)+ 9H2O(g);△H=5518 kJ/mol |
D.2C8H18(g)+25O2(g)=16CO2 (g)+18H2O(1);△H=5518 kJ/mol |