Chapter 11 - Redox Rxns and Electrochem
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| Electrochemistry | study of relationship btwn chem rxns and electrical E
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| Electrochemical rxns | include spontaneous rxns that produce electrical E and nonspontaneous rxns that use electrical E to produce chemical change
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| redox rxn | coupled oxidation and reduction rxns occuring simultaneously
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| oxidizing agent | gets reduced and causes another atom to be oxidized; NAD+
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| reducing agent | gets oxidized and causes another atom to be reduced; NADH
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| Oxidation Numbers | assigned to atoms to keep track of redistribution of e- during chemical rxn
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| Electrochemical cells | contained systems where redox rxns occur
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| Galvanic Cell | where spontaneous rxns occur; G is negative, energy used to do work
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| Electrolytic Cell | where nonspontaneous rxns occur; positive G
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| Anode | where oxidation occurs
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| Cathode | where reduction occurs
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| charge of e- | 1.6E-19 C
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| Faraday's Constant | 96,487 C/mol e-
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| reduction potential | tendency of a species to acquire e- and be reduced
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| standard electromotive force (emf) | difference in potential btwn two half-cells
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| If emf is positive | then G is negative, ln K is positive, products are favored, and rxn is spontaneous
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