Chapter 18, Problem 86RQ

Interpretation Introduction

Interpretation:

The standard Gibb’s energy, $\Delta G^o$ for the following reaction is to be calculated.

Concept Information:

Gibbs free energy is a thermodynamic quantity that can be used to calculate the maximum work done by any thermodynamic system at constant temperature and pressure.

It can also be defined as the change in enthalpy of a thermodynamic system, minus the product of the change in entropy of the system and the absolute temperature.

It can be represented by the equation,

$\Delta G^0=\Delta H-T\Delta S$

Here, $\Delta G^0$ is the change in Gibbs free energy, $\Delta H$ is the change in enthalpy, $T$ is the change in temperature, and $\Delta S$ is the change in entropy of the system.

Entropy is a thermodynamic quantity that represents the absence of a particular system’s thermal energy for conversion into mechanical work.

The entropy of one mole of a substance at a standard temperature of $298\text{ K}$ is known as its standard molar entropy $\left(\text{S°}\right)$.