The Δ r G ° value and the equilibrium constant for the given reaction should be calculated. Concept introduction: The Gibbs free energy or the free energy change is a thermodynamic quantity represented by Δ r 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 ) Δ G ∘ is related to the equilibrium constant K by the equation, Δ r G ∘ = − R T ln K p . The rearranged expression is, K p = e − Δ r G ∘ R T

BuyFind

Chemistry & Chemical Reactivity

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

Chemistry & Chemical Reactivity

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

Solutions

Chapter 18, Problem 30PS
Interpretation Introduction

Interpretation:

The ΔrG° value and the equilibrium constant for the given reaction should be calculated.

Concept introduction:

The Gibbs free energy or the free energy change is a thermodynamic quantity represented by ΔrG. 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)

ΔG is related to the equilibrium constant K by the equation,

  ΔrG=RTlnKp.

The rearranged expression is,

  Kp=eΔrGRT

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