问题:
[单选题]Which of the following statements is true?
For an ideal solution,.
A. AHmix =0 but HEX>0B. AGmix =0 but GEx>0
C. ASmx>0 but SEX=0
D. AGmix<0 but GEx=0
E. Cand D
GEX is excess Gibbs free energy,HEXis excess enthalpy SEX is excess entropy
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