coulometry

coulometry

[koo-lom-i-tree, kuh-]
noun Chemistry.
a method used in quantitative analysis, whereby the amount of a substance set free or deposited during electrolysis is determined by measuring the number of coulombs that passed through the electrolyte.

Origin:
1940–45; coulo(mb) + -metry

coulometric [koo-luh-me-trik] , adjective
coulometrically, adverb
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World English Dictionary
coulometer or coulombmeter (kuːˈlɒmɪtə, ˈkuːlɒmˌmiːtə)
 
n
Also called: voltameter an electrolytic cell for measuring the magnitude of an electric charge by determining the total amount of decomposition resulting from the passage of the charge through the cell
 
[C19: from coulomb + meter³]
 
coulombmeter or coulombmeter
 
n
 
[C19: from coulomb + meter³]
 
coulometric or coulombmeter
 
adj
 
cou'lometry or coulombmeter
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
Encyclopedia

coulometry

in analytical chemistry, method for determining the quantity of a substance, based on the strict proportionality between the extent of a chemical change and the quantity of electricity involved (Faraday's law). The quantity of the material to be analyzed can be determined directly by depositing the substance on an electrode or by generating electrolytically in the solution a known amount of a substance that will react with the test material. The latter method is analogous to volumetric titration.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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