question_answer

What is the dominant intermolecular force or bond that must be overcome in converting liquid \[3.0\times {{10}^{4}}\]to a gas?

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 \[{{\,}_{Z+}}_{1}^{A}Y\xrightarrow[{}]{{}}\,_{Z-1}^{A-4}\beta +\alpha _{2}^{4}\] molecules intermolecular H-bonding exist. Hence, it is the intermolecular H-bonding that must be overcome in converting liquid \[_{Z+1}^{A-4}\beta \xrightarrow[{}]{{}}\,_{Z-1}^{A-4}\beta +\gamma _{0}^{0}\] to gas.