Determination of equilibrium constants information
Equilibrium constants are determined in order to quantify chemical equilibria. When an equilibrium constant K is expressed as a concentration quotient,
it is implied that the activity quotient is constant. For this assumption to be valid, equilibrium constants must be determined in a medium of relatively high ionic strength. Where this is not possible, consideration should be given to possible activity variation.
The equilibrium expression above is a function of the concentrations [A], [B] etc. of the chemical species in equilibrium. The equilibrium constant value can be determined if any one of these concentrations can be measured. The general procedure is that the concentration in question is measured for a series of solutions with known analytical concentrations of the reactants. Typically, a titration is performed with one or more reactants in the titration vessel and one or more reactants in the burette. Knowing the analytical concentrations of reactants initially in the reaction vessel and in the burette, all analytical concentrations can be derived as a function of the volume (or mass) of titrant added.
The equilibrium constants may be derived by best-fitting of the experimental data with a chemical model of the equilibrium system.
and 25 Related for: Determination of equilibrium constants information
Equilibriumconstants are determined in order to quantify chemical equilibria. When an equilibriumconstant K is expressed as a concentration quotient...
Stability constants, formation constants, binding constants, association constants and dissociation constants are all types ofequilibriumconstants. For a...
and K2 are examples of stepwise equilibriumconstants. The overall equilibriumconstant, βD, is product of the stepwise constants. H 2 A ↽ − − ⇀ A 2 −...
to derive equilibriumconstant values from experimental data use association constants for both acids and bases. Because stability constants for a metal-ligand...
define all constants as association constants. The relationship between the two types ofconstant is given in association and dissociation constants. A cumulative...
occurs because solubility products, like other types ofequilibriumconstants, are functions of temperature. In accordance with Le Chatelier's Principle...
prediction of reaction directions, the extent of reaction progress, and the determinationofequilibriumconstants. It finds applications in various fields...
define all constants as association constants. The relationship between the two types ofconstant is given in association and dissociation constants. In biochemistry...
Cato M. Guldberg and Peter Waage between 1864 and 1879 in which equilibriumconstants were derived by using kinetic data and the rate equation which they...
General Equilibrium below). In partial equilibrium analysis, the determinationof the price of a good is simplified by just looking at the price of one good...
on the determinationofequilibriumconstants from potentiometric (pH) titration data. The process is far from straightforward for a variety of reasons...
constant ionic strength which may later be used for the determinationofequilibriumconstants. Note that the regular Gran functions will provide the required...
chemical kinetics deals with the experimental determinationof reaction rates from which rate laws and rate constants are derived. Relatively simple rate laws...
In microeconomics, supply and demand is an economic model of price determination in a market. It postulates that, holding all else equal, in a competitive...
Equilibrium fractionation Transient kinetic isotope fractionation Rock, Peter A. (1975). "The Electrochemical DeterminationofEquilibriumConstants for...
gives the effective activities of the components, and hence allows expressions such as Raoult's law and equilibriumconstants to be applied to both ideal...
coefficients are determined from equilibriumconstant values obtained with solutions at various ionic strengths. The determinationof SIT interaction coefficients...
describes a linear free-energy relationship relating reaction rates and equilibriumconstants for many reactions involving benzoic acid derivatives with meta-...
positive value. Given the relationship between equilibriumconstant and the forward and reverse rate constants, K = k 1 / k − 1 {\displaystyle K=k_{1}/k_{-1}}...
temperature. (The "1.36 rule" is useful in general for estimation of equilibriumconstants at room temperature from free energy differences. At lower temperatures...
primarily studies systems in thermodynamic equilibrium. Non-equilibrium thermodynamics is often treated as an extension of the classical treatment, but statistical...
The resting membrane potential is not an equilibrium potential as it relies on the constant expenditure of energy (for ionic pumps as mentioned above)...
constant T = temperature in kelvins (K) or degrees Rankine (°R) K = equilibriumconstant at temperature T ln is the natural logarithm function In order for...
kinetic simulations using the rate and equilibriumconstants reported for the amino-thiourea catalyzed cyanosilylation of ketones". J. Am. Chem. Soc. 129 (51):...
Global Information![{\displaystyle K={\frac {\mathrm {[S]} ^{\sigma }\mathrm {[T]} ^{\tau }\cdots }{\mathrm {[A]} ^{\alpha }\mathrm {[B]} ^{\beta }\cdots }}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/7fbf3623d6284c219011f318e2197779ab194931)