How will iso butane have weak intermolecular forces and how it has an higher boiling point than n butane if n butane's intermolecular forces are stronger than that of iso butane?

Asked by Arun Iyer | 26th Jan, 2011, 12:00: AM

Expert Answer:

Dear Student
I think there is a small confusion. 
Butane has a higher boiling point because the dispersion forces are greater. The molecules are longer (and so set up bigger temporary dipoles) and can lie closer together than the shorter, fatter 2-methylpropane molecules.
We hope that clarifies your query.

Answered by  | 27th Jan, 2011, 10:09: AM

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