Chapter 20: Oxidation/Reduction Reactions

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12 Terms

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Oxidation

Loss of electrons

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Reduction

Gain of electrons

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Oxidizing Agent

Substance that causes oxidation

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Reducing Agent

Substance that causes reduction

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Half Reaction

Chemical equation that shows only the oxidation process or the reduction process, with the total electrons lost or gained in the equation.

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Chemical cell

Apparatus in which two half reactions in separate containers are connected by a wire.

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Anode

The side of a chemical cell in which oxidation takes place.

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Cathode

The side of a chemical cell in which reduction takes place.

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Voltaic cell

Chemical cell that spontaneously produces an electric current.

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Cell Potential

The push of electrons from anode to cathode.

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Electrolytic Cell

A cell that moves electrons from cathode to anode by external potential. Nonspontaneous reverse reaction of a voltaic cell.

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Standard Cell potential

The potential of a cell in which all of the components are at standard conditions (1 M concentration, 1 atm pressure)