题目:
已知:① S(单斜,s)+O2(g) = SO2(g) △H1=-297.16 kJ·mol-1
② S(正交,s)+O2(g) = SO2(g) △H2=-296.83 kJ·mol-1
③ S(单斜,s) = S(正交,s) △H3
下列说法正确的是( )
A.S(单斜)和S(正交)互为同分异构体
B.△H3= + 0.33 kJ·mol-1 ,单斜硫转化为正交硫的反应是吸热反应
C.S(单斜,s) = S(正交,s) △H3<0,正交硫比单斜硫稳定
D.S(单斜,s) = S(正交,s) △H3>0,单斜硫比正交硫稳定
答案:
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