# The value of Δ r G ∘ for the given reaction HgS ( s ) + O 2 ( g ) → Hg ( l ) + SO 2 ( g ) at 25 ° C should be calculated and should be identified that whether the reaction is product-favoured at equilibrium. Concept introduction: The Gibbs free energy or the free energy change is a thermodynamic quantity represented by Δ G ∘ . It can be calculated in a similar manner as entropy and enthalpy. The expression for the free energy change is: Δ r G ° = ∑ n Δ f G ° ( products ) − ∑ n Δ f G ° ( reactants )

### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter 18, Problem 20PS

(a)

Interpretation Introduction

## Interpretation:The value of ΔrG∘ for the given reaction HgS(s)+O2(g)→Hg(l)+SO2(g) at 25 °C should be calculated and should be identified that whether the reaction is product-favoured at equilibrium.Concept introduction:The Gibbs free energy or the free energy change is a thermodynamic quantity represented by ΔG∘. It can be calculated in a similar manner as entropy and enthalpy.  The expression for the free energy change is:  ΔrG°=∑nΔfG°(products)−∑nΔfG°(reactants)

(b)

Interpretation Introduction

### Interpretation:The value of ΔrG∘ for the given reaction HgS(s)+O2(g)→Hg(l)+SO2(g) at 25 °C should be calculated and should be identified that whether the reaction is product-favoured at equilibrium.Concept introduction:The Gibbs free energy or the free energy change is a thermodynamic quantity represented by ΔG∘. It can be calculated in a similar manner as entropy and enthalpy.  The expression for the free energy change is:  ΔrG°=∑nΔfG°(products)−∑nΔfG°(reactants)

(c)

Interpretation Introduction

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