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2015 FRQ q2-(f) 이 문제를 이렇게 답변해도 되나요?:

C2H4 is near insoluble in water because of the weak dipole-induced dipole forces between the C2H4 molecule and water molecule. But C2H5OH is highly soluble in water because it is capable of hydrogen bonding with water molecule. Therefore C2H5OH has stronger intermolecular attraction with water molecule than that of C2H4. Thus C2H4 is collected as gas and C2H5OH reamin dissolved in water.