Explain the differences in boiling point for 1 bromobutane and 2 bromobutane

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Solution

1-bromobutane (n-butyl bromide) bp = 100° among constitutional isomers has higher boiling point than 2-bromobutane which is branched isomer, has more compact shape, decreased area of contact and decreased van der Waals attractive forces between molecules.

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Similar questions

Which is the correct increasing order of boiling points of the following compounds?

1-iodobutane , 1-bromobutane, 1-chlorobutane, Butane

(a) Butane < 1-chlorobutane < 1-bromobutane < 1-iodobutane

(b) 1-iodobutane < 1-bromobutane < 1-chlorobutane < Butane

(d) Butane < 1-chlorobutane < 1-iodobutane < 1-bromobutane

Which is the correct increasing order of boiling points of the following compounds?

1-bromoethane, 1-bromopropane , 1-bromobutane, Bromobenzene

(a) Bromobenzene < 1-bromobutane < 1-bromopropane < 1-bromoethane

(b) Bromobenzene < 1-bromoethane < 1-bromopropane < 1-bromobutane

(d) 1-bromoethane < 1-bromopropane < 1-bromobutane < Bromobenze

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