Question

Arrange the following in order of increasing boiling point:-
N-butylchloride, Isobutyl chloride, tertiary- butylchloride.

Answer 1

The order of increasing boiling point is

i) Chloromethane (CH3Cl)< Bromomethane (CH3Br) < Dibromomethane (CH2Br2)< Bromoform (CHBr3)

ii) Isopropyl chloride (C3H7Cl)< 1-Chloropropane (C3H7Cl) < 1-Chlorobutane(C4H9Cl)

Generally, boiling point increases with the molecular weight of the compound and decreases with the branching of the chain.