Electrochemical reaction | Wikipedia audio article
Channel: wikipedia tts
Date: 18/02/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electrochemistry


00:01:19 1 History
00:01:28 1.1 16th-to-18th-century developments
00:05:14 1.2 19th century
00:09:59 1.3 20th century and recent developments
00:11:14 2 Principles
00:11:24 2.1 Oxidation and reduction
00:15:36 2.2 Balancing redox reactions
00:16:08 2.2.1 Acidic medium
00:18:16 2.2.2 Basic medium
00:20:00 2.2.3 Neutral medium
00:21:22 3 Electrochemical cells
00:27:03 4 Standard electrode potential
00:30:09 5 Spontaneity of redox reaction
00:31:23 6 Cell emf dependency on changes in concentration
00:31:40 6.1 Nernst equation
00:37:55 6.2 Concentration cells
00:38:09 7 Battery
00:41:52 8 Corrosion
00:42:50 8.1 Iron corrosion
00:48:54 8.2 Corrosion of common metals
00:51:54 8.3 Prevention of corrosion
00:52:16 8.3.1 Coating
00:53:50 8.3.2 Sacrificial anodes
00:56:40 9 Electrolysis
00:58:28 9.1 Electrolysis of molten sodium chloride
00:59:04 9.2 Electrolysis of water
00:59:39 9.3 Electrolysis of aqueous solutions
01:00:58 9.3.1 Electrolysis of a solution of sodium chloride
01:01:33 9.4 Quantitative electrolysis and Faraday's laws
01:03:10 9.4.1 First law
01:05:23 9.4.2 Second law
01:05:54 10 Applications
01:10:18 11 See also
01:10:56 12 References
01:12:49 13 Bibliography
01:13:49 14 External links



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SUMMARY
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Electrochemistry is the branch of physical chemistry that studies the relationship between electricity, as a measurable and quantitative phenomenon, and identifiable chemical change, with either electricity considered an outcome of a particular chemical change or vice versa. These reactions involve electric charges moving between electrodes and an electrolyte (or ionic species in a solution). Thus electrochemistry deals with the interaction between electrical energy and chemical change.
When a chemical reaction is caused by an externally supplied current, as in electrolysis, or if an electric current is produced by a spontaneous chemical reaction as in a battery, it is called an electrochemical reaction. Chemical reactions where electrons are transferred directly between molecules and/or atoms are called oxidation-reduction or (redox) reactions. In general, electrochemistry describes the overall reactions when individual redox reactions are separate but connected by an external electric circuit and an intervening electrolyte.