Question

when you think about how you can clean oil off of birds and other animals, you should now know that water is not the answer. water is a polar molecule that can dissolve other polar substances. oil, on the other hand, is usually made up of nonpolar molecules. this does not mean that there is no substance that can dissolve oil. why do the molecules shown below look so colorful? based on the images below, try to deduce a principle that can help determine which substances can dissolve in which. select all that apply. polar substances dissolve in nonpolar substances. nonpolar substances dissolve in polar substances. polar substances dissolve in polar substances. nonpolar substances dissolve in nonpolar substances. solubility is unpredictable. sodium chloride hydrochloric acid hydrochloric acid ethane choose which of the images below explains why water and oil separate into layers when they are put together.

Explanation:

• The principle of solubility is "like dissolves like". Polar substances have regions of partial positive and negative charges. Non - polar substances have a more even distribution of electron density.
• Polar substances dissolve in polar substances because the polar - polar interactions (such as dipole - dipole interactions) can stabilize the solution. For example, water (polar) can dissolve other polar substances like sodium chloride (ionic, which can be thought of as having charged regions).
• Non - polar substances dissolve in non - polar substances. The non - polar - non - polar interactions (such as London dispersion forces) are sufficient to form a solution. Oil (non - polar) can dissolve in other non - polar solvents.
• Polar and non - polar substances do not dissolve in each other. Water (polar) and oil (non - polar) do not mix because the polar - non - polar interactions are not strong enough to overcome the cohesive forces within the polar and non - polar substances respectively.

Answer:

C. Polar substances dissolve in polar substances.
D. Nonpolar substances dissolve in nonpolar substances.