How does the boiling point of ethane (CH3CH3) compare with that of ethanol (CH3CH2OH)?

A. The boiling point of ethane is higher because it has stronger dipole-dipole forces.
B. The boiling point of ethane is lower because it has weaker covalent bonds.
C. The boiling point of ethane is lower because it lacks hydrogen bonds.
D. The boiling point of ethane is higher because it has stronger London dispersion forces.

Question

How does the boiling point of ethane (CH3CH3) compare with that of ethanol (CH3CH2OH)?

 		A.	The boiling point of ethane is higher because it has stronger dipole-dipole forces.
 		B.	The boiling point of ethane is lower because it has weaker covalent bonds.
 		C.	The boiling point of ethane is lower because it lacks hydrogen bonds.
 		D.	The boiling point of ethane is higher because it has stronger London dispersion forces.

vera_ewing · Answer

@aaronq I'm pretty sure the answer is A

jagr2713 · Answer

i know someone who is great at chem @aaronq

vera_ewing · Answer

Hopefully he will help me

vera_ewing · Answer

@aaronq

jagr2713 · Answer

He is prob busy

aaronq · Answer

ethanol has a higher BP because of hydrogen bonding

vera_ewing · Answer

So what would the answer be? Am I right?

vera_ewing · Answer

Or is it D?

aaronq · Answer

nope, it's not A (ethane doesn't have a permanent dipole moment) and it's not D.

aaronq · Answer

re-read what i wrote then your options

vera_ewing · Answer

Ok so it's C?

aaronq · Answer

yes

vera_ewing · Answer

thanks so much for explaining that ! :)

aaronq · Answer

no problem!