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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: Winga on February 12, 2005, 01:18:37 PM

Title: Compare the boiling point of butenes
Post by: Winga on February 12, 2005, 01:18:37 PM

Not just for butenes, but all alkenes.

Why the boiling point of but-2-ene is higher than that of but-1-ene?

Title: Re:Compare the boiling point of butenes
Post by: jdurg on February 12, 2005, 06:09:07 PM

I think that's because the but-2-ene can be 'stacked' into a neat array which allows for more intermolecular interaction than the but-1-ene can.  Also, but-2-ene has some isomers of its own which can cause the B.P. to change, again due to how well the molecule can stack up and experience intermolecular attractions.

Title: Re:Compare the boiling point of butenes
Post by: Winga on February 13, 2005, 01:37:43 AM

Can we use dipole moment to explain it?