Chapter 9, Problem 9.131SP

Interpretation Introduction

Interpretation:

The change in value of $\text{ΔS}$ entropy for the commercial production of 1,2-dicholoroethane involves the reaction of ethylene with chlorine needs to be determined.

${\text{C}}_{\text{2}}{\text{H}}_{\text{4}}\left(g\right){\text{+ Cl}}_{\text{2}}\left(g\right)\stackrel{}{\to }{\text{C}}_{\text{2}}{\text{H}}_{\text{4}}{\text{Cl}}_{\text{2}}\left(l\right)$

Concept introduction:

The Gibb’s equation of thermodynamic purposed a relation between $\text{ΔS}$, $\text{ΔH}$ and $\text{ΔG}$ with Temperature. The mathematical expression of Gibb’s equation can be written as:

$\text{ΔG = ΔH - TΔS }$

With the help of this equation one can predict the change in $\text{ΔS}$, $\text{ΔH}$ and $\text{ΔG}$. For any reaction the $\text{ΔH}$ can be calculated with the help of following relation:

$\text{ΔrH°= ΣΔrH°product - }\sum \text{ΔrH°reactant}$