Wax is a nonpolar substance. in which type of substance is it the most soluble? a. a cold nonpolar solvent

4 answers
Question:

Wax is a nonpolar substance. in which type of substance is it the most soluble?
a.
a cold nonpolar solvent
b.
a cold polar solvent
c. a hot nonpolar solvent
d. a hot polar solvent

Answers

C. A hot non polar solvent

Explanation:

I was just doing this in class yesterday actually. For an example, cooking oil is a polar substance. When we tried to wash it off with nothing but water--which is non polar--it wouldn't come off our hands. So, a polar versus polar will dissolve and visa versa. I also said hot water because wax hardens when it gets cold. so something hot would work better.

. a hot nonpolar solvent

Explanation:

Wax is a nonpolar substance hence it would normally dissolve in a nonpolar solvent. However, its dissolution may not be effective because the solid needs to met so that it can dissolve properly hence some amount of best needs to be applied to the system. A hot nonpolar solvent will do a good job because it will both melt and dissolve the wax.

Probably if the wax is in a molten state a hot non-polar solvent would be best. Heat  vegetable oil would be the best way to dissolve the molten wax.


Second question.

I actually think the ice forms on the top because it is less dense than the water. Good thing too. Fish would be frozen solid in winter if ice sank rather than floated as most other substances behave.

When we take clotting to the dry cleaner it is important to identify any strain  that are on the clothing because according to the like dissolve like fact to remove strain which solvent is required.  

Solubility of any substance depends on the following fact:

“like dissolves like”

Means polar solvent dissolve polar substances and non-polar dissolves non-polar substances.   is polar compound which dissolve in polar solvent like water not in benzene, , because   is non-polar solvent.  

The solubility of solute in solvent depends on the following factors:

Solute  Solvent

Polar  Non-polar  

Ionic  Soluble  Insoluble  

Polar  Soluble  Insoluble  

Non-PolarInsoluble  Soluble

Thus if solute is ionic or polar means it dissolves in polar solvents like water, acetone etc and if solute is non- polar means it  does not dissolve in polar solvents like water, acetone

Generally the solubility of compound will increases with temperature because as the temperature of solvent increases kinetic energy also increases. Thus the molecules of solvent are fast moving at higher temperature.

hence the correct answer is C.  

a hot non-polar solvent

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