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Chapter 17
Oxidation and Reduction

17-04

Title	Oxidation numbers
Caption	Oxidation occurs when there is an increase in oxidation number. Reduction occurs when there is a decrease in oxidation number.
Keywords	oxidation number, reduction, reactive, oxygen, chlorine, bromine

17-05

Title	Oxidation and reduction
Caption	Three different definitions of oxidation and reduction. Besides looking at the change in oxidation number, these definitions may be used to deterine where oxidation - or reduction - processes occur.
Keywords	oxidation, reduction, electron, ydrogen, oxygen, gain, loss

17-07

Title	Electrolysis
Caption	Electrolysis. When direct electric current is passed through an electrolyte, positive ions move to the cathode and negative ions move to the anode. Reduction occurs at the cathode, and oxidation takes place at the anode.
Keywords	electrolysis, electrolyte, direct current, cathode, anode, ions, reduction, oxidation

17-08

Title	Electrolysis of molten sodium chloride
Caption	The diagram shows the electrolysis of molten sodium chloride.
Keywords	electrolysis, sodium, chloride, direct current, NaCl, molten salt

17-09

Title	Electroplating of silver
Caption	The diagram shows an electrolytic cell for the plating of silver.
Keywords	electroplating, electrolysis, electrolyte, silver, nitrate, direct current

17-10

Title	Electrochemical cell
Caption	A simple electrochemical cell. A battery may consist of two or more such cells. In this cell the two half-cells are separated by a porous partition. Variations of this Zn/Cu cell, called Daniell cells, were used to power telegraph relays more than 100 years ago.
Keywords	electrochemical, cell, battery, telegraph, electrolytic, voltaic, galvanic, electricity, current

17-11

Title	Electrochemical cell with a salt bridge
Caption	In this electrochemical cell, solutions in the two half-cells are connected by a salt bridge. In the left compartment, zinc atoms give up electrons that flow through the wire to the copper metal in the right compartment. Copper(II) ions pick up the electrons and are reduced to copper atoms that are plated out as copper metal.
Keywords	electrochemical, cell, salt bridge, half-cell, zinc, electrolyte

17-12

Title	Flashlight dry cell
Caption	The diagram shows a cross section of a flashlight "dry cell."
Keywords	dry cell, wet cell, Daniell, zinc-copper, battery, Zn/Cu

17-14

Title	Car battery
Caption	Cutaway diagram of a lead-acid storage battery. Six 2-volt cells make up a 12-volt automobile battery.
Keywords	automobile, car, battery, electrolytic, voltaic, cell, lead, lead dioxide, oxidize, reduce

Title	Electrolytes and Non-Electrolytes
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Title	Oxidation-Reduction Reactions - Part I
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Title	Oxidation-Reduction Reactions - Part II
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Title	Standard Reduction Potentials
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Title	Voltaic Cells I: The Copper-Zinc Cell
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Title	Voltaic Cells II: The Zinc-Hydrogen Cell
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Title	Electroplating
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Title	Oxidation-Reduction Reactions of the Halogens
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Title	Redox chemistry of tin and zinc
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Title	Reduction of CuO
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Title	Strong and weak electrolytes
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