For each set of structure shown below list the compound in increasing water solubility

Question

CH3CH2CH2CH2OH, CH3CH2OCH2CH3, CH3CH2CH2OH, CH3OH

Answer 1

low molar mass compounds are more soluble, OH groups allow hydrogen bonding. so I would go with
1 being more soluble and 4 least soluble.
CH3CH2CH2CH2OH, 3
CH3CH2OCH2CH3, 4
CH3CH2CH2OH, 2
CH3OH 1