Arrange each set of compounds in order of increasing boiling points.

(i) Bromomethane, Bromoform, Chloromethane, Dibromomethane.


(ii) 1-Chloropropane, Isopropyl chloride, 1-Chlorobutane.


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.


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