Chemistry 104

GENERAL CHEMISTRY

Chapter 21 -- Key Concepts

• Identify the anode and cathode (and the reactions that take place at each) for a galvanic and an electrolytic cell.

• Calculate the cell potential from a table of standard reduction potentials.

• Give the cell diagram for a particular galvanic cell (and vice versa).

• Relate the standard cell potential to free energy.

• Use the electrochemical series to predict if reactions are spontaneous. Also, determine anode and cathode for a random pair of reactions

• Use the electrochemical series to determine the relative oxidizing or reducing power of random species.

• Use the electrochemical series to determine equilibrium constants.

• Use electrochemical data to determine the concentration of random ions (including pH).

• Determine which reactions will occur during electrolysis of aqueous solutions.

• Perform stoichiometric calculations using electrolysis data.

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