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Ch.18 - ElectrochemistryWorksheetSee all chapters

# Cell Potential and Equilibrium

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Sections
Standard Reduction Potentials
Intro to Electrochemical Cells
Galvanic Cell
Electrolytic Cell
Cell Potential: Standard
Cell Potential: The Nernst Equation
Cell Potential and Gibbs Free Energy
Cell Potential and Equilibrium
Cell Potential: G and K
Cell Notation
Electroplating

Gibbs Free Energy connects together Standard Cell Potential and the Equilibrium Constant

###### Gibbs Free Energy's Connections

Concept #1: Through Gibbs Free Energy a new formula can be derived to connect the Standard Cell Potential and the Equilibrium Constant.

Example #1: A certain electrochemical reaction involves the transferring of 4 electrons. If the value of its equilibrium constant is 2.50 x 1012 at 25.0ºC, calculate the standard cell potential.

Practice: Calculate the equilibrium constant for the following reaction at 25ºC.

Fe (s) + I2 (s)  →  Fe2+ (aq) + 2 I (aq)

Given the following reduction potentials:

Fe2+(aq) + 2 e  →. Fe (s)                          E°red = – 0.45 V

I2 (s) + 2 e  →. 2 I (aq)                           E°red = + 0.54 V