The standard potential for given galvanic cell has to be calculated using the standard Gibbs energy value. Concept Introduction: Electrochemical cells: Both oxidation and reduction occur at the same moment in an electrochemical cell. The oxidation process occurs at the anode while the reduction process occurs at the cathode in the cell. The concentration of the electrode (anode or cathode) in the half-cells and cell potential (voltage) can be calculated with the help of Nernst equation. The production of electric current from spontaneous reaction occurring from the electrochemical cell is defined as galvanic cell. The relation between the cell potential E cell and the Gibbs energy is, − ν F E c e l l = Δ r G h e r e , E c e l l − c e l l p o t e n t i a l Δ r G − G i b b s e n e r g y F − F a r a d a y ' s c o nstant ν − n o . o f e l e c t r o n s

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Chapter 5, Problem 5.71P

(a)

Interpretation Introduction

Interpretation:

The standard potential for given galvanic cell has to be calculated using the standard Gibbs energy value.

Concept Introduction:

Electrochemical cells: Both oxidation and reduction occur at the same moment in an electrochemical cell. The oxidation process occurs at the anode while the reduction process occurs at the cathode in the cell. The concentration of the electrode (anode or cathode) in the half-cells and cell potential (voltage) can be calculated with the help of Nernst equation.

The production of electric current from spontaneous reaction occurring from the electrochemical cell is defined as galvanic cell.

The relation between the cell potential Ecell and the Gibbs energy is,

−νFEcell=ΔrGhere, Ecell− cell potential ΔrG−Gibbs energy F−Faraday's constant ν− no. of electrons

(b)

Interpretation Introduction

Interpretation:

The standard potential for given couple has to be calculated.

Concept Introduction:

Electrochemical cells: Both oxidation and reduction occur at the same moment in an electrochemical cell. The oxidation process occurs at the anode while the reduction process occurs at the cathode in the cell. The concentration of the electrode (anode or cathode) in the half-cells and cell potential (voltage) can be calculated with the help of Nernst equation.

The production of electric current from spontaneous reaction occurring from the electrochemical cell is defined as galvanic cell.

The relation between the cell potential Ecell and the Gibbs energy is

−νFEcell=ΔrGhere, Ecell− cell potential ΔrG−Gibbs energy F−Faraday's constant ν− no. of electrons

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