Which Structure Has The Highest Melting Point?

[ProblemSets]

Which structure will have the highest melting point?

 

[Hootenanny]

Firstly, what molecular features determine a molecule's melting point?

 

[ProblemSets]

the forces:
hydrogen
dipoole-dipole
london dispersion

I am thinking C. am i right?

 

[Hootenanny]

Your are correct, but do you know why?

 

[ProblemSets]

i believe B and C are dipole-dipole forces, which are stronger than A and D which are london disperion forces. i know dipole-diople is stronger than london. Would the answer be C since it has the longest carbon chain that is polar.

thanks

 

[chemisttree]

Keep working at it... "C" (1-butene) is NOT CORRECT!

 

[Hootenanny]

In which case, I stand corrected. I guess I should stick to Math & Physics, and butt out of chem...

 

[ProblemSets]

I did some research and i believe that the answer is A.

does that sound right?

 

[chemisttree]

How did you research your answer?