Electrochemical reactions | Wikipedia audio article
Channel: wikipedia tts
Date: 31/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electrochemistry


00:01:13 1 History
00:01:21 1.1 16th-to-18th-century developments
00:04:53 1.2 19th century
00:09:17 1.3 20th century and recent developments
00:10:27 2 Principles
00:10:36 2.1 Oxidation and reduction
00:14:29 2.2 Balancing redox reactions
00:14:59 2.2.1 Acidic medium
00:16:52 2.2.2 Basic medium
00:18:27 2.2.3 Neutral medium
00:19:40 3 Electrochemical cells
00:24:52 4 Standard electrode potential
00:27:45 5 Spontaneity of redox reaction
00:28:50 6 Cell emf dependency on changes in concentration
00:29:06 6.1 Nernst equation
00:34:35 6.2 Concentration cells
00:34:48 7 Battery
00:38:06 8 Corrosion
00:38:57 8.1 Iron corrosion
00:44:20 8.2 Corrosion of common metals
00:47:05 8.3 Prevention of corrosion
00:47:26 8.3.1 Coating
00:48:50 8.3.2 Sacrificial anodes
00:51:15 9 Electrolysis
00:52:56 9.1 Electrolysis of molten sodium chloride
00:53:30 9.2 Electrolysis of water
00:54:01 9.3 Electrolysis of aqueous solutions
00:55:15 9.3.1 Electrolysis of a solution of sodium chloride
00:55:48 9.4 Quantitative electrolysis and Faraday's laws
00:57:16 9.4.1 First law
00:59:17 9.4.2 Second law
00:59:46 10 Applications
01:03:47 11 See also
01:04:23 12 References
01:06:03 13 Bibliography
01:06:59 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.