据题有:
C(s)+1/2O2 (g)=CO(g)△H=-110.5KJ/mol ,C(s)+O2(g)=CO2(g) △H=-393.5KJ/mol.
因为80gC有20/3mol若将其完全燃烧则放约2623.333KJ(20/3mol×(-393.5KJ/mol)),而事实上产生了3/4的CO和的1/4CO(产生的CO2和CO的总量为20/3mol),所以有[3/4×20/3mol×(-110.5KJ/mol)]+[1/4×20/3mol×(-393.5KJ/mol)]≈-1208.333KJ,即产生了约1208.333KJ的热量,所以损失了2623.333KJ-1208.333KJ=1415KJ的热量.
没有问题吧?如果有,你再告诉我吧!