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Examples: analytical balance, spectrophotometer, titrimeter, coulometer, emission spectrometer etc.

Q: What are measuring apparatus in analytical chemistry?

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Examples: analytical balance, spectrophotometer, titrimeter, coulometer, emission spectrometer etc.

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A device for determining the amount of a substance released during electrolysis by measuring the electrical charge that results from the electrolysis. Coulometers can be used to detect and measure trace amounts of substances such as water.

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An analytical instrument is the instrument used to determine the chemical composition of materials, qualitatively or quantitatively; ex.: internally coupled plasma mass spectrometer, polarograph, atomic absorption spectrometer, X-ray spectrometer, coulometer, Karl Fischer titrator, etc.

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The mass of a substance, according to Faraday's law, produced or consumed by electrolysiswith 100% current efficiency during the flow of a quantity of electricity equal to 1 faradayor 96,487 coulomb(1 coulomb corresponds to a current of 1 ampere during 1 second). Electrochemical equivalents are essential in the calculation of the current efficiency of an electrodeprocess.

The electrochemical equivalent of a substance is equal to the gram-atomic or gram-molecular mass of this substance divided by the number of electrons involved in the electrode reaction. For example, the electrochemical-2equivalent of zinc, for which two electrons are required in order to deposit one atom, is Zn/2 or 65.37/2 g. Thus, the faraday is equal to the product of the charge of the electron times the number of electrons (the avogadro-s-number) required to react with 1 atom- or molecule-equivalent of substance. See also Coulometer.

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