Answer:
Step-by-step explanation:
Propanone is more soluble in water compared to butane due to the presence of hydrogen bonds in propanone.
Hydrogen bonds are special dipole-dipole attraction in polar molecules in which hydrogen atom is directly joined to a highly electronegative atom such as oxygen, nitrogen or fluorine.
Hydrogen bonds allow molecules such as propanone to be soluble in water since they can mix intimately with the water via the bond.