Oil and water are immiscible. Which is the most likely
reason?
(...

Question

Oil and water are immiscible. Which is the most likely
reason? 
(a) Oil molecules are denser than water. 
(b) Oil molecules are composed mostly of carbon and hydrogen.
(c) Oil molecules have higher molar masses than water.
(d) Oil molecules have higher vapor pressures than water.
(e) Oil molecules have higher boiling points than water.

Accepted Answer

Hey everyone, we're told that propane all and water are miserable with each other and were asked what is the most likely reason. Now, Before we look at our answer choices, let's go ahead and draw out our structures. Now we know that propane all has three methyl groups and a hydroxide group and our water has two hydrogen attached to our oxygen. Looking at our two structures, we can see that hydrogen bonds are possible and we know that hydrogen bonds can occur with our flooring oxygen and our nitrogen. So the reason why propane all and water are miserable with one another is because of our hydrogen bonds. So it looks like our answer here is going to be c propane. All molecules can make hydrogen bonds with water molecules. Now I hope that made sense. And let us know if you have any questions.

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