Electrochemistry

Electrochemistry - LEO goes GER An atom that is oxidized is the reducing agent and an atom that is reduced is the oxidizing agent A redox reaction

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“LEO goes GER” - An atom that is oxidized is the reducing agent , and an atom that is reduced is the oxidizing agent . A redox reaction involves a transfer of electrons, and since the flow of electrons constitutes an electric current which can do work, we use a spontaneous redox reaction to generate an electric current . - Use a galvanic cell Oxidation occurs at the anode, reduction occurs at the cathode . - The anode is usually a metal of some sort , and usually gets oxidized . Example: consider a specific galvanic cell, with the anode made of Anions from the salt bridge travel towards the anode, whereas cations from the salt bridge travel to the cathode . - This movement of ions completes the circuit and allows the current in the wire to continue until the metal at the anode is consumed. - An ammeter between the anode and cathode measure the electric current traveling through the circuit. Anode | Anodic solution || Cathodic solution | cathode - Example 10-3, page 630 In the absence of a salt bridge, charge separation develops. The anode develops a positive charge and the cathode develops a negative charge (Why? oxidation occurs at the anode, so we have a ton of cations floating around in the surrounding solution of the anode. At the cathode, reduction occurs so there are many anions floating around in solution, making the net charge
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This note was uploaded on 11/07/2010 for the course CBN 356 taught by Professor Merill during the Spring '08 term at Rutgers.

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Electrochemistry - LEO goes GER An atom that is oxidized is the reducing agent and an atom that is reduced is the oxidizing agent A redox reaction

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