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Outline of Chapter 20 - 5 Know and be able to use the...

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Chapter Objectives for Chapter 20, Petrucci, 9th ed. - Edited for Chem. 1A03. Ch 20 Electrochemistry The most important objectives appear in bold font. Objectives (or parts of objectives) for which you are not responsible appear in red . 1. Describe how a voltaic cell operates, with the concepts of electrodes, salt bridges, half-cell equations, net cell reaction, and cell diagram. Write an accurate cell diagram for a given cell, or describe a cell from a cell diagram. Understand and explain the role of inert electrodes. 2. Describe the standard hydrogen electrode and explain how other standard electrode potentials are related to it. 3. Use tabulated standard potentials, E o , to determine for an oxidation- reduction reaction and predict whether the reaction is spontaneous or not ( > 0 or < 0). 4. Quantitatively (with use of the Nernst equation) and qualitatively predict the effect of varying conditions (concentrations and gas pressures) on values of E cell , including for concentration cells.
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Unformatted text preview: 5. Know and be able to use the equations that relate and K , and understand the relationship between signs of and magnitude of K , and spontaneity. 6. Describe some common voltaic cells: the flashlight or dry cell, the lead storage battery, the silver-zinc cell, and the fuel cell. 7. Explain the corrosion of metals in electrochemical terms and describe methods of corrosion protection. 8. Describe how an electrolytic cell differs from a voltaic cell. Understand the chloralkali process and describe the chemistry that occurs in this cell. Describe the potential end uses of chloralkali process products, for example in bleach manufacture or water sanitation. 9. Identify the possible half reactions that might occur in an electrolysis and choose the pair that will occur, based on the highest (least negative) cell potential. 10. Use Faraday’s laws to relate the quantity of chemical change produced by a given amount of electric charge....
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