题目内容

已知25℃、101kPa条件下:
4Al (s) + 3O2 (g) =2Al2O3 (s) , △H =" -2834.9" kJ·mol-1
4Al (s) +2O3 (g) =2Al2O3 (s) ,△H =" -3119.91" kJ·mol-1.
由此得出的结论正确的是
A.3O2(g)=2O3(g),△H =285.01kJ·mol-1
B.3O2(g)=2O3(g),△H =" -285.01" kJ·mol-1
C.2O3(g)=3O2(g),△H =" +285.01" kJ·mol-1
D.2O3(g)=3O2(g),△H =" -285.01" kJ·mol-1.
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