Faraday's law


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Faraday's law,

physical law stating that the number of molesmole,
in chemistry, a quantity of particles of any type equal to Avogadro's number, or 6.02×1023 particles. One gram-molecular weight of any molecular substance contains exactly one mole of molecules.
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 of substance produced at an electrode during electrolysiselectrolysis
, passage of an electric current through a conducting solution or molten salt that is decomposed in the process. The Electrolytic Process

The electrolytic process requires that an electrolyte, an ionized solution or molten metallic salt, complete an
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 is directly proportional to the number of moles of electrons transferred at that electrode; the law is named for Michael Faraday, who formulated it in 1834. The amount of electric chargecharge,
property of matter that gives rise to all electrical phenomena (see electricity). The basic unit of charge, usually denoted by e, is that on the proton or the electron; that on the proton is designated as positive (+e
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 carried by one mole of electrons (6.02 x 1023 electrons) is called the faraday and is equal to 96,500 coulombscoulomb
[for C. A. de Coulomb], abbr. coul or C, unit of electric charge. The absolute coulomb, the current U.S. legal standard, is the amount of charge transferred in 1 second by a current of 1 ampere; i.e., it is 1 ampere-second.
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. The number of faradays required to produce one mole of substance at an electrode depends upon the way in which the substance is oxidized or reduced (see oxidation and reductionoxidation and reduction,
complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule. Originally the term oxidation
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). For example, in the electrolysis of molten sodium chloride, NaCl, one faraday, or one mole, of electrons is transferred at the cathode to one mole of sodium ions, Na+, to form one mole of sodium atoms, Na, while in the electrolysis of molten magnesium chloride, MgCl2, two faradays of electrons must be transferred at the cathode to reduce one mole of magnesium ions, Mg+2, to one mole of magnesium atoms, Mg.
References in periodicals archive ?
Faraday's Law of Magnetic Induction (1831): A changing magnetic field is accompanied by a changing electric field at right angles to the change of the magnetic field.
Is there any theoretical reason behind multiplying by N when using Faraday's law of induction?
From comparison we find that curl E = -[partial derivative]B/[partial derivative]t is in accordance with Faraday's law.
21] has applied the Nernst equation, mass balance equation of redox reaction and Faraday's law of electrolysis to establish the relationship between the half-cell redox concentration of Ce(IV)/Ce(III) and the ORP during electrolysis.
With the discovery of Faraday's law, the stage was setfor the development of a complete theory of Electromagnetism.
To gauge current, the clamp relies on Faraday's law.
While paying much attention to the discontinuity of the electric field vector, we found it to be natural to apply similar procedures to the line integration of the electric field in the integral form of the Faraday's law.
nPower is a vibration harvesting technology that produces power by using Faraday's law of induction: the induced electromotive force (EMF) in any closed circuit is equal to the time rate of change of the magnetic flux through the circuit.
Faraday's Law (of magnetic induction) is the fundamental principle behind EMI and crosstalk.
The new VNS flow-sensor measures the amount of fluid inside a tube by determining the amount of electricity produced when the fluid moves through the tube in accordance with Faraday's law.
We couldn't have done it without Faraday's Law and Charles was the one who told us about that.
You may remember Faraday's law by the same name, which basically states that when a magnet passes through a coil, it produces electricity.