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Faraday constant The charge

Michael Faraday (1791-1867) was a British chemist and physicist (he considered himself a natural philosopher) who made enormous contributions to electromagnetism and electrochemistry. He is widely regarded as the greatest experimentalist in the history of science. It was largely due to his efforts that electricity became viable for use in technology. The SI unit of capacitance (the farad) is named after him, as is the Faraday Constant (the charge on a mole of electrons, about 96485 coulombs). He made many discoveries in chemistry, including benzene, and invented a system of oxidation numbers of the elements. [Pg.262]

Faraday constant The charge of 1 mole of electrons, which is 96485 coulombs. Pick s first law Relates diffusive flux to concentration gradient. J = -D dc/dx, where D is the diffusion coefficient and dc/dx is the concentration gradient of diffusive species. [Pg.315]

EMF at standard temperature and pressure, and with pure reactants F Faraday constant, the charge on one mole of electrons, 96,485 Coulombs... [Pg.429]

Faraday constant the charge carried by 1 mole of electrons (or 1 mole of singly charged ions). It has a value of 96 500 coulombs per mol (C mol )-... [Pg.490]

A voltammetric curve can be viewed in electrochemistry as the emission or absorption spectra in spectroscopy. The current density (i.e., the number of charges per unit of time and area) corresponds to the emitted or absorbed light intensity (the number of quanta per unit of time and area). Finally, when multiplied by the Faraday constant, the potential defines the energy of the system and can thus be treated as an analog of the light frequency, which can also gives energy when multiplied by the Planck constant. [Pg.12]

Here, a molecule of the salt dissociates into V cations of charge z, and v2 anions of charge z2, and F is the Faraday constant. The set of Eq. (10.104) is useful for the treatment of a composite membrane consisting of compartments in series. The practical parameters above were derived long before the linear nonequilibrium thermodynamics formulations... [Pg.523]

In these equations AT(int) and AT(app) are the intrinsic and apparent equilibrium constants, respectively, F is the Faraday constant, the surface potential, and AZ is the change in the charge of the surface species for the reaction under consideration (as written for the equilibrium reaction for which K is defined). [Pg.569]

The potential free energy associated with the formation of the proton gradient is called the proton motive force (PMF), the counterpart of the electro-motive force (EMF), and represented by the symbol ApH - PMF consists of two components, one of which is associated with the difference between the proton concentrations on the inside (i) and outside (o) of the membrane, i.e., ([H ]j - [H ]q). As proton concentration can be expressed in terms of pH, the proton-concentration difference can be written as ApH, i. e., -log,([H ] / [H o), and the potential difference in volts written as 2.3(RT/c ApH where< is the Faraday constant. The second component of PMF arises from the fact that protons are positively charged, and so there is an electro-static transmembrane potential, designated as AT. When PMF, Apn% is expressed as the sum of the proton-gradient term and the membrane-potential term, we have... [Pg.678]

Faraday constant ( ) - The electric charge of 1 mol of singly charged positive ions i.e., F = N e, where is Avogadro s constant and e is the elementary charge. [1]... [Pg.103]

The subscript i refers to the /th species, which has an effective charge of Z and F is the Faraday constant. The current is the product of charge and velocity. [Pg.452]

Faraday Constant ( ) the quantity of electric charge involved in the passage of one Avagadro number (or one mole) of electrons. The value of F (universal) is 96 485 C mol . ... [Pg.1397]

In all these processes of energy conversion, two parameters are fundamental - the tensions between both electrodes, and the current delivered or produced, which is proportional to the mass flow according to Faraday s law (N = q nF with N the number of moles of species transformed, q the total electric charge passed through the electrical circuit n the number of electrons exchanged and F= 96 485 C moE is the Faraday constant).The loss of yield in these processes corresponds mainly to heat production, which can be exploited in some specific cases. [Pg.554]


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