Question

Which of the following would not dissolve in water?

C2H6

H2S

CH3OH

HCl

Answer 1

WHich ones are polar? Those don't dissolve in water.

Answer 2

Ok let me see.

Answer 3

HCl is known to be a strong acid, and H2 a non-polar gas which isn't soluble much in anything. So H-Cl

CCl4 is an organic solvent that is non-polar, while AlCl3 is a lewis acid that dissolves readily in water, but also, unfortunately reacts with it pretty violently :) so AlCl3 it is

CH3Cl (chloromethane) is polar, while CCl4 (as in the previous item) is non-polar, so chloromethane would be more soluble in water.

CH3OH (methanol) is highly polar, and a lot like water, while dimethyl ether (H3COCH3 ) is much less polar... so methanol it is then.

I guess this question is designed to ask about polarity of these molecules, and then the ones that are more polar are the ones more soluble in water.

Answer 4

Thanks! H2S is polar, so thats the answer.

Answer 5

Polar is easily dissolve in water. So what you need is to find non polar
C2H6 --> non polar (it's the answer)
H2S --> polar
CH3OH -->polar
HCl --> polar

Answer 6

Oh, thanks Kevin.
I guess Raffle_Shaffle had a typo....