已知298 K、101 kPa条件下: ①4Al(s)+3O 2 (g)=2Al 2 O 3 (s) ΔH=-2834.9 kJ·mol -1 ②4Al(s)+2O 3 (g)=2Al 2 O 3 (s) ΔH=-3119.1 kJ·mol -1 由此得出的正确结论是( )
A.
等质量的O 2 比O 3 能量低,由O 2 变为O 3 为放热反应
B.
O 3 比O 2 稳定,由O 2 变为O 3 为吸热反应
C.
O 2 比O 3 稳定,由O 2 变为O 3 为放热反应
D.
等质量的O 2 比O 3 能量低,由O 2 变为O 3 为吸热反应
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