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t. e. In chemistry, an acid dissociation constant (also known as acidity constant, or acid-ionization constant; denoted ) is a quantitative measure of the strength of an acid in solution. It is the equilibrium constant for a chemical reaction. known as dissociation in the context of acid–base reactions. The chemical species HA is an ...
The Van 't Hoff equation relates the change in the equilibrium constant, Keq, of a chemical reaction to the change in temperature, T, given the standard enthalpy change, ΔrH⊖, for the process. The subscript means "reaction" and the superscript means "standard". It was proposed by Dutch chemist Jacobus Henricus van 't Hoff in 1884 in his book ...
Goldman's equation seeks to determine the voltageEmacross a membrane.[5] A Cartesian coordinate systemis used to describe the system, with the zdirection being perpendicular to the membrane. Assuming that the system is symmetrical in the xand ydirections (around and along the axon, respectively), only the zdirection need be considered; thus ...
Potassium chloride ( KCl, or potassium salt) is a metal halide salt composed of potassium and chlorine. It is odorless and has a white or colorless vitreous crystal appearance. The solid dissolves readily in water, and its solutions have a salt -like taste.
The Goldman–Hodgkin–Katz flux equation (or GHK flux equation or GHK current density equation) describes the ionic flux across a cell membrane as a function of the transmembrane potential and the concentrations of the ion inside and outside of the cell. Since both the voltage and the concentration gradients influence the movement of ions ...
The most common regeneration process is the pyrohydrolysis process, applying the following formula: [25] 4 FeCl 2 + 4 H 2 O + O 2 → 8 HCl + 2 Fe 2 O 3. By recuperation of the spent acid, a closed acid loop is established. [7] The iron(III) oxide by-product of the regeneration process is valuable, used in a variety of secondary industries. [25]
Schwarzschild radius. The Schwarzschild radius or the gravitational radius is a physical parameter in the Schwarzschild solution to Einstein's field equations that corresponds to the radius defining the event horizon of a Schwarzschild black hole. It is a characteristic radius associated with any quantity of mass.
In continuum mechanics, the Froude number ( Fr, after William Froude, / ˈfruːd / [ 1]) is a dimensionless number defined as the ratio of the flow inertia to the external force field (the latter in many applications simply due to gravity ). The Froude number is based on the speed–length ratio which he defined as: [ 2][ 3] where u is the ...