a. CH3CH2CH2OH is more soluble in water since alcohol can form hydrogen bonds with water. e. C5H5CH3 (toluene) is more soluble in hexane since it has very low polarity. Solution a. CH3CH2CH2OH is more soluble in water since alcohol can form hydrogen bonds with water. e. C5H5CH3 (toluene) is more soluble in hexane since it has very low polarity..