Solubility indicates how completely a substance dissolves into another substance.
Marco Franzoso has written: 'Edisol-M. Water Solubile' 'Westwood Dee-Jay'
No, 2-octene is not soluble in water because it is a nonpolar compound and water is a polar solvent. Nonpolar compounds like 2-octene are not able to form favorable interactions with water molecules, leading to poor solubility.
In general terms, because (1) the carbon-oxygen and hydrogen-oxygen bonds in ethanol are much more polar than any of the bonds in propane; (2) the oxygen atom in ethanol can form hydrogen bonds with the hydrogen atoms in water, but there is not such possibility with propane; and (3) propane contains more carbon atoms per molecule than ethanol.