Question

9 mark for review pure sample of which of the following compounds has the highest boiling point? a licl b cl₂ c pcl₃ d ccl₄

Explanation:

Step1: Identify bonding types

Ionic compounds have stronger intermolecular forces than molecular compounds. LiCl is an ionic compound (formed by a metal - lithium and a non - metal - chlorine), while Cl₂, PCl₃, and CCl₄ are molecular compounds held together by weaker van der Waals forces.

Step2: Analyze boiling point based on bonding

Stronger intermolecular forces lead to higher boiling points. Since ionic bonds in LiCl are much stronger than the van der Waals forces in Cl₂, PCl₃, and CCl₄, LiCl will have the highest boiling point among the given compounds.

Answer:

A. LiCl