Chapter 18.7, Problem 2CYU

Interpretation Introduction

Interpretation:

The standard free energy change for oxidation of one mole ${\text{SO}}_{\text{2}}\left(\text{g}\right)$ should be calculated using ${\text{Δ}}_{\text{f}}{\text{G}}^{\text{o}}$.

Concept introduction:

The Gibbs free energy or the free energy change is a thermodynamic quantity represented by ${\text{ΔG}}^{\text{o}}$. It can be calculated in a similar manner as entropy and enthalpy. The expression for the free energy change is:

  ${\text{Δ}}_{\text{r}}{\text{G}}^{\text{°}}\text{=}\sum {\text{nΔ}}_{\text{f}}{\text{G}}^{\text{°}}\left(\text{products}\right)\text{-}\sum {\text{nΔ}}_{\text{f}}{\text{G}}^{\text{°}}\left(\text{reactants}\right)$