Hydrocarbons are nonpolar compounds. Water is polar because of the fact the unequal sharing of electrons between oxygen and hydrogen. Methanol is immiscible in hexane because methanol is a polar compound due to the -OH group. Hexane is a definite non-polar solvent, as are all alkanes. Solubility In Hexane. (I don't think I shook the separating funnel in this step) I then added fresh water to the separating funnel again. if so, they're soluble with exceptions! Ethanol and hexanol have the -OH group in common. RE: rank these compounds by their expected solubility in hexane C6H14? Hexane is relatively non-polar, via version in electronegativity. I then added methanol to the separating funnel. c3h8. Lv 4. Anonymous. We’re being asked identify which among methanol or CH 3 Br(l) is less soluble in hexane. 4 years ago. most to least. Hexane (/ ˈ h ɛ k s eɪ n /) is an organic compound, a straight-chain alkane with six carbon atoms and has the molecular formula C 6 H 14.. Hexane is a significant constituent of gasoline.It is a colorless liquid, odorless when pure, and with boiling points approximately 69 °C (156 °F). It is widely used as a cheap, relatively safe, largely unreactive, and easily evaporated non-polar solvent. Hexane is nonpolar because there are only carbons and hydrogen atoms. ch3oh. h20. This is a highly polar group, which increases the solubility in water. to that end, look to confirm if the different compounds are polar, if so than meaning they're insoluble. Recall that the main idea in dissolution is like dissolves like, which means compounds with the same polarity and intermolecular force can dissolve each other.. Hexane is an example of a hydrocarbon, a compound composed only of carbons and hydrogens. This Site Might Help You. Erika. The degree to which an alcohol is soluble depends on the size of the alcohol molecule. 1 67. Ethanol is soluble in water because the -OH group of ethanol (CH3CH2OH) can form hydrogen bonds with water. The remainder of the molecules, CH3-CH2- and CH3-CH2-CH2-CH2-CH2-CH2- resp. This caused the white to diffuse into the lower methanol/water layer so that it could be extracted. Adding methanol immediately caused the white soap to clump together at the interface, and the hexane layer now appeared clear. H2O is the least soluble as it is immicable (will not mix together at all)! 0 0. Methanol is the smallest, with only one carbon, and is the most polar. Source(s): https://shrinke.im/a9Bj4. Alcohols are generally soluble in both polar and non-polar solvents. 5 years ago. The bonds between carbon and hydrogen in hexane are uniform.