The Δ r G ° for the given reaction N 2 ( g ) +O 2 ( g ) ⇄ 2NO ( g ) should be calculated using standard free energies of reactant and product formation and should be identified that whether reaction is reactant or product favoured. Concept introduction: The Gibbs free energy or the free energy change is a thermodynamic quantity represented by Δ r G o . It can be calculated in a similar manner as entropy and enthalpy. The expression for the free energy change is: Δ r G ° = ∑ nΔ f G ° ( products ) - ∑ nΔ f G ° ( reactants ) Δ r G o gets related to the reaction quotient Q by the expression Δ r G = Δ r G ° + RT lnQ For a general reaction, aA + bB → cC + dD Q = [ C ] c [ D ] d [ A ] a [ B ] b

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 18.7, Problem 6CYU

(a)

Interpretation Introduction

Interpretation:

The ΔrG° for the given reaction N2(g)+O2(g)2NO(g) should be calculated using standard free energies of reactant and product formation and should be identified that whether reaction is reactant or product favoured.

Concept introduction:

The Gibbs free energy or the free energy change is a thermodynamic quantity represented by ΔrGo. It can be calculated in a similar manner as entropy and enthalpy.  The expression for the free energy change is:

  ΔrG°fG°(products)fG°(reactants)

ΔrGo gets related to the reaction quotient Q by the expression ΔrG = ΔrG°+ RT lnQ

For a general reaction, aA + bBcC + dD

  Q = [C]c[D]d[A]a[B]b

(b)

Interpretation Introduction

Interpretation:

The ΔrG° for the reaction when 0.10 atmN2,0.10atm O2and0.010atm NO are mixed should be calculated and should be identified that whether this reaction is spontaneous or not under such given conditions.

Concept introduction:

The Gibbs free energy or the free energy change is a thermodynamic quantity represented by ΔrGo. It can be calculated in a similar manner as entropy and enthalpy.  The expression for the free energy change is:

  ΔrG°fG°(products)fG°(reactants)

ΔrGo gets related to the reaction quotient Q by the expression ΔrG = ΔrG°+ RT lnQ

For a general reaction, aA + bBcC + dD

  Q = [C]c[D]d[A]a[B]b

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