Chapter 16, Problem 16.88SP

Interpretation Introduction

Interpretation:

The possibility of using catalyst for the conversion of acetylene to benzene has to be ascertained.  The possibility of synthesis of benzene from graphite and gaseous $H_2$ at $25°C$ and $1\text{ atm}$ pressure has to be discussed.

Concept Introduction:

• $\Delta G_f^{°}$ refers to standard free energy formation.   Standard free energy of a reaction is   determined as,

$\Delta G_{rxn}^{°}=\Sigma \Delta G_f^{°}(product)-\Sigma \Delta G_f^{°}(reac\tan t)$

Where,

$\begin{array}{l}\Delta G_{rxn}^{°}=\text{ standard free energy of reaction}\\ \Delta H_f^{°}(product)=\text{ standard free energy of formation of product}\\ \Delta H_f^{°}(reac\tan t)=\text{ standard free energy of formation of reactant}\end{array}$

• Spontaneous process has – positive entropy value and negative free energy, enthalpy value.
• Non-spontaneous process tends to proceed with negative entropy value and positive free energy and enthalpy.