What organic compound is hydrophobic?
What organic compound is hydrophobic?
Hydrophobic organic compounds are relatively insoluble, nonpolar compounds that have large octanol-water partition coefficients (log Kow > 2). A number of pollutants of interest are hydrophobic compounds such as polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and the DDT group of pesticides.
What types of compounds are hydrophilic?
Hydrophilic means “water-loving.” Chemical groups that tend to make substances hydrophilic include ionic (charged) groups and groups that contain oxygen or nitrogen atoms. Starch is an example of a hydrophilic polymer. Cellulose fibers are hydrophilic due to the presence of -OH groups at their surfaces.
Is NaCl hydrophobic?
Mid-log-phase cells from defined medium containing 3.4 M NaCl normally produced a hydrophobicity reading of only 14 (hexadecane hydrophobicity = 100), while corresponding cells from defined medium containing 0.05M NaCl gave a hydrophobicity reading of 90.
Is vegetable oil hydrophobic or hydrophilic?
Oils, by contrast, are nonpolar, and as a result they’re not attracted to the polarity of water molecules. In fact, oils are hydrophobic, or “water fearing.” Instead of being attracted to water molecules, oil molecules are repelled by them.
Is cooking oil polar?
Vegetable oil is a non-polar molecule. These two substances do not mix together, they are imiscible (they will not mix together). That’s why you see the blobs of water bobbing around in the oil. Food coloring is a polar molecule so it WILL mix with the water.
Is cooking oil soluble in acetone?
Some organic solvents, such as acetone and diethyl ether, contain electronegative oxygen as part of their molecular composition. Because of the central position of oxygen, neither acetone nor diethyl ether is a polar substance, and both dissolve oils effectively.
What is the chemical name of soap?
Sodium hydroxide, also called caustic soda or lye, is a traditional ingredient for soap-making. While potassium hydroxide is more common in liquid soap-making, it is possible to produce liquid soaps using caustic soda.
What type of surfactant is soap?
anionic surfactant
What are examples of surfactants?
Sodium stearate is a good example of a surfactant. It is the most common surfactant in soap. Another common surfactant is 4-(5-dodecyl)benzenesulfonate. Other examples include docusate (dioctyl sodium sulfosuccinate), alkyl ether phosphates, benzalkaonium chloride (BAC), and perfluorooctanesulfonate (PFOS).
Is white vinegar a surfactant?
In addition, vinegar does not contain surfactants, so it cannot carry oil and grease away in the same way that soaps and detergents can. Therefore, the science of cleaning says that vinegar is not good at cutting grease like some have claimed.
What is a non ionic surfactant?
Non-ionic surfactants are surfactants that have polar head groups that are not electrically charged (see Fig. 20.18). They usually rely on a functional group able to deprotonate but only to a very low degree.
Can baking soda dissolve oil?
Baking soda is an alkali, which means it does a great job of dissolving grease. And because it’s mild, it destroys grease without destroying your hands or the surfaces you’re cleaning. Just mix 3 tablespoons of baking soda with 1 cup of water.