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General Chemistry

Intro to Electrochemistry

The study of the exchange between electrical and chemical energy. Electrochemistry
A galvanic cell or cells connected in series with a constant amount of reagents. A battery stores energy in the form of electrical potential energy. Battery
Process by which materials, usually metals, are purified by means of an electrolytic cell. The anode is the impure metal and the cathode is a very pure sample of the metal. Electrorefining
The loss of an electron from a species (an increase in its oxidation number). Oxidation
A conceptual bookkeeping numbering system that allows us to track the number electrons transferred during a redox reaction. The rules for determining the oxidation number of a species are discussed in Galvanic Cells. Oxidation Number
The gain of an electron by a species (a decrease in oxidation number). Reduction
A reaction involving the transfer of one or more electrons from the reducing agent to the oxidizing agent. Redox
A reactant in a redox reaction that donates an electron to the reduced species. The reducing agent is oxidized. Reducing Agent
A reactant in a redox reaction that accepts an electron from the oxidized species. The oxidizing agent is reduced. Oxidizing Agent
An electrochemical cell with a positive cell potential that allows chemical energy to be converted into electrical energy. Galvanic Cell
The overall electrical potential of an electrochemical cell. It is the sum of the reduction potential of the cathode and the oxidation potential of the anode. Cell Potential
The potential of a half-reaction written as an oxidation reaction, it is the opposite sign of the same reaction written as a reduction. Oxidation Potential
A cell that consumes electrical energy to drive a non-spontaneous redox reaction. Electrolytic Cell
Created by: Taylor Nguyen