Lecture 16a - Chapter 14 Electrochemistry 1 Basic Concepts...

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Chapter 14 Electrochemistry
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1. Basic Concepts: Redox reaction: involves transfer of electrons from one pecies to another. Oxidized spec es to a ot e a species loses electrons. Reduced Oxidant a species gains electrons. Oxidizing agent which takes electrons Reductant Reducing agent which gives electrons -- Electric charges, q, is measure in coulombs Faraday constant, F.
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Current, I, is measure in ampere: I = q/t Electric potential, work and free energy
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2. Galvanic Cells Concept: a galvanic cell is also called voltaic cell, which uses a spontaneous hemical reaction to generate electricity chemical reaction to generate electricity. xidation Reduction Oxidation Net reaction node: the electrode where oxidation occurs Anode: the electrode where oxidation occurs Cathode: the electrode where reduction occurs
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Salt bridge: Two half cells: ine notation: Line notation: Phase boundary Salt bridge
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3. Standard Potentials Different half cells have different electric potential energy Standard reduction potential of each
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Lecture 16a - Chapter 14 Electrochemistry 1 Basic Concepts...

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