Chapter 14, Problem 78AE

Interpretation Introduction

Interpretation: The difference in the values of $\Delta \text{H}$ for the given reactions which involves the breaking of $\text{N-Cl}$ bond needs to be determined.

  $\begin{array}{l}{\text{NCl}}_{\text{3(g)}}\stackrel{}{\to }{\text{NCl}}_{\text{2(g)}}{\text{+Cl}}_{\text{(g)}}\text{ ΔH=375kJ/mol}\\ {\text{ONCl}}_{\text{(g)}}\stackrel{}{\to }{\text{NO}}_{\text{(g)}}{\text{+Cl}}_{\text{(g)}}\text{ ΔH=158kJ/mol}\end{array}$

Concept Introduction:

Lewis dot structure is the representation which shows the bonding between atoms present in a molecule. It shows lone pairs and bond pairs that existing on each bonded atom. Lewis dot structure is also known as Lewis dot formula or electron dot structure. The hybridization of bonded atoms can be calculated with the help of below formula:

  $\text{Hybridization = Number of sigma bonds + Number of lone pairs on bonded atoms}\text{.}$

A single covalent bond is formed by one sigma bond whereas a double bond consists of one sigma and one pi bond. <