The value for Δ f G ° for MX n for the reaction to be product favored at equilibrium is to be stated. Concept introduction: The change of Gibbs free energy to form one mole of a substance from its constituent elements when all the substances in the standard form is known as standard Gibbs free energy of formation ( Δ f G ° ) . The standard Gibbs free energy of reaction ( Δ r G ∘ ) in terms of standard Gibbs free energy of formation ( Δ f G ° ) is written as, Δ r G ∘ = ∑ Δ f G ∘ products − ∑ Δ f G ∘ reactants If the value of standard Gibbs free energy of reaction ( Δ r G ∘ ) is positive then the reaction is reactant favored. If the value of standard Gibbs free energy of reaction ( Δ r G ∘ ) is negative then the reaction is product favoured and spontaneous.

BuyFind

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781337399074
BuyFind

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781337399074

Solutions

Chapter 21, Problem 99GQ

(a)

Interpretation Introduction

Interpretation:

The value for ΔfG° for MXn for the reaction to be product favored at equilibrium is to be stated.

Concept introduction:

The change of Gibbs free energy to form one mole of a substance from its constituent elements when all the substances in the standard form is known as standard Gibbs free energy of formation (ΔfG°).

The standard Gibbs free energy of reaction (ΔrG) in terms of standard Gibbs free energy of formation (ΔfG°) is written as,

ΔrG=ΔfGproductsΔfGreactants

If the value of standard Gibbs free energy of reaction (ΔrG) is positive then the reaction is reactant favored. If the value of standard Gibbs free energy of reaction (ΔrG) is negative then the reaction is product favoured and spontaneous.

(b)

Interpretation Introduction

Interpretation:

Among the metals, Ba, Pb, Hg and Ti which is/are predicted to have a product-favored reaction with HCl is to be stated.

Concept introduction:

The change of Gibbs free energy to form one mole of a substance from its constituent elements when all the substances in the standard form is known as standard Gibbs free energy of formation (ΔfG°).

The standard Gibbs free energy of reaction (ΔrG) in terms of standard Gibbs free energy of formation (ΔfG°) is written as,

ΔrG=ΔfGproductsΔfGreactants

If the value of standard Gibbs free energy of reaction (ΔrG) is positive then the reaction is reactant favoured. If the value of standard Gibbs free energy of reaction (ΔrG) is negative then the reaction is product favoured and spontaneous.

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