Question

Why the boiling point of 1-bromobutane is higher than 1-bromo-2-methylpropane?

Answer 1

1-bromobutane (n-butyl bromide) bp = 100° among constitutional isomers, branched isomers
have a more compact shape,
decreased area of contact,
decreased van der Waals attractive forces between neighbors,while

Answer 2

Hey dear,


● Explanation -
- Branched chain alkanes have compact shape and weak van der Waals forces.
- Hence, boiling point decreases with increase in branching.
- As 1-bromo butane is straight chain alkane it has quite high boiling point.
- As 2-bromo-2-methyl propane is branched chain alkane its boiling point is lower.


Hope this helps you...