3463763640 - Electrochemical Methods of Analysis...

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lectrochemical Methods of Analysis Electrochemical Methods of Analysis Potentiometric Methods of Analysis 1 2 008 Lecture # 6 1 11/02/2008
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The difference between a Galvanic and an Electrolytic Cell Zn + Cu 2+ Zn 2+ + Cu Cu + Zn 2+ Cu 2+ + Zn 2
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17.2 Standard Reduction Potentials 2H + (aq) + Zn(s) Zn 2+ (aq) + H (g) 2 The reaction in a galvanic cell is always an oxidation-reduction reaction that can be broken down into two half-reactions. Zn Zn 2+ (Anode) 2H + H 2 (Cathode) 3
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(Anode) (Cathode) () 4 Zn Zn 2+ 2H + H 2
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he scientific community has universally accepted the half The scientific community has universally accepted the half- reaction potentials based on the assignment of zero voltage the process to the process 2H + + 2e - H 2 Under standard conditions where ideal behavior is assumed It has to be written as reduction processes 5
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6
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otentiometric Methods of Analysis Potentiometric Methods of Analysis • Potentiometric Measurements eference Electrodes Reference Electrodes • Metallic Indicator Electrodes • Membrane Electrodes uantitative Applications • Quantitative Applications • Evaluation 7
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This note was uploaded on 03/24/2011 for the course CHEM 323 taught by Professor Basimali during the Fall '09 term at King Fahd University of Petroleum & Minerals.

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3463763640 - Electrochemical Methods of Analysis...

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