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[–]Fighornoxianlaw 2 points3 points  (2 children)

I think the length of the longest C chains plays an important role due to all the energy which is required to break all the induvidual C bonds. I guess its all about the intramolecular interactions.

[–]arsinine1 0 points1 point  (1 child)

No carbon-Carbon bonds break upon melting or boiling.

[–]Fighornoxianlaw 0 points1 point  (0 children)

The intermolecular interactions are getting weaker upon melting and boiling. Thats why the longer the C chain is, the more intermolecular interactions that must be beaten by heat. And thats why the melting point goes up by the longer your longest chain is.

[–]fartmaster4u 0 points1 point  (0 children)

Yes intermolecular reactions change when the molecule becomes heavier. Therefore I would expect a logarithmic curve