question_answer

What is the dominant intermolecular force or bond that must be overcome in converting liquid \[C{{H}_{3}}OH\] to a gas?                                                                                                                        [AIPMT (S) 2009]

A)  Hydrogen bonding

B)  Dipole-dipole interaction

C)  Covalent bonds

D)  London dispersion force

Correct Answer: A

Solution :

Key Idea When H atom is directly linked with N or O, or F, inter or intermolecular H-bonding is formed.

In between \[C{{H}_{3}}OH\] molecules intermolecular H-bonding exist.

Hence, it is the intermolecular H-bonding that must be overcome in converting liquid \[C{{H}_{3}}OH\] to gas.