Question

CF2 24. (1 pt.) Ethanol has a higher boiling point than dimethyl ether. Which intermolecular force is primarily responsible for this difference? H&C CH₂ H₃COh Oh dimethyl ether ethanol b.p. -24 °C b.p. 78 °C 25. (1 pt.) Dibutyl ether has a higher boiling point than ethanol. Which intermolecular force is primarily responsible for this difference? HJC-CH2OH H CHECH2CHE " CH CH 2 CH CH 3 ethanol b.p. 78 °C dibutyl ether b.p. 141 °C

Answer 1

24)

Hydrogen Bond: The bond between high electronegative atom like O,F or N and hydrogen atom ( which is attached to O,F or N) is called hydrogen bond.

Due to the formation of Hydrogen bond ethanol has higher boiling point than dimethyl ether.

In ethanol hydrogen bond formation is takes place because here hydrogen atom is attached to more electronegative oxygen atom.

But Incase dimethyl ether hydrogen bond is not possible.

So it has less boiling point than ethanol.

formation of Hydrogen bond between ethanol molecules as follows:.

H Hg dhiogen band