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Longer titles found: Determination of equilibrium constants (view)

searching for Equilibrium constant 91 found (253 total)

Conformational isomerism (3,777 words) [view diff] exact match in snippet view article find links to article

T , {\displaystyle K=e^{-\Delta G^{\circ }/RT},} where K is the equilibrium constant, ΔG° is the difference in standard free energy between the two conformers

Curtin–Hammett principle (3,757 words) [view diff] exact match in snippet view article find links to article

reactions. The relationship between the (apparent) rate constants and equilibrium constant is known as the Winstein-Holness equation. The Curtin–Hammett principle

Adenosylhomocysteinase (636 words) [view diff] exact match in snippet view article find links to article

AdoHcyase, promoting the buildup of S-adenosyl-L-homocystine (due to equilibrium constant favors S-adenosyl-L-homocystine), a potent inhibitor of methyl transfer

Freundlich equation (868 words) [view diff] exact match in snippet view article find links to article

also derived (non-empirically) by attributing the change in the equilibrium constant of the binding process to the heterogeneity of the surface and the

Mass–action ratio (658 words) [view diff] exact match in snippet view article find links to article

the equilibrium constant. At equilibrium: Γ = K e q {\displaystyle \Gamma =K_{eq}} The ratio of the mass–action ratio to the equilibrium constant is often

Schild equation (1,234 words) [view diff] exact match in snippet view article find links to article

according to an equilibrium constant : K d = k − 1 k 1 {\displaystyle K_{d}={\frac {k_{-1}}{k_{1}}}} Although the equilibrium constant is more meaningful

Langmuir adsorption model (4,972 words) [view diff] exact match in snippet view article find links to article

adsorbed species A ad {\displaystyle A_{\text{ad}}} with an associated equilibrium constant K eq {\displaystyle K_{\text{eq}}} : A g + S ↽ − − ⇀ A ad {\displaystyle

Atom transfer radical polymerization (4,289 words) [view diff] exact match in snippet view article find links to article

determines the equilibrium constant between the active and dormant species. This equilibrium determines the polymerization rate. An equilibrium constant that is

Water–gas shift reaction (2,421 words) [view diff] exact match in snippet view article find links to article

this reaction shows a significant temperature dependence and the equilibrium constant decreases with an increase in temperature, that is, higher hydrogen

Henderson–Hasselbalch equation (1,425 words) [view diff] exact match in snippet view article find links to article

experimental conditions covered by the calculations. The thermodynamic equilibrium constant, K ∗ {\displaystyle K^{*}} , K ∗ = [ H + ] [ A − ] [ HA ] × γ H +

Charge-transfer complex (1,345 words) [view diff] exact match in snippet view article find links to article

upon the degree (equilibrium constant) of this association reaction. Methods have been developed to determine the equilibrium constant for these complexes

Pressure jump (699 words) [view diff] exact match in snippet view article find links to article

reactants and products and the equilibrium position. If K is the equilibrium constant and P is the pressure then the volume change is given by: Δ V o =

Tetrahedral carbonyl addition compound (2,329 words) [view diff] exact match in snippet view article find links to article

For example, the equilibrium constant for reaction of acetaldehyde with simple alcohols is about 0.5, where the equilibrium constant is defined as K =

Polyester (5,185 words) [view diff] exact match in snippet view article find links to article

acid-based (-C(O)OH) and alcohol-based (-OH) monomers is described by the equilibrium constant KC. K C = [ . . . − C ( O ) O − . . . ] [ H 2 O ] [ − C ( O ) OH

Law of dilution (732 words) [view diff] exact match in snippet view article find links to article

and Randall recognized that the law fails badly since the supposed equilibrium constant is actually far from constant. This is because the dissociation of

General equilibrium theory (6,053 words) [view diff] no match in snippet view article find links to article

an economy while its other factors are held constant. In general equilibrium, constant influences are considered to be noneconomic, or in other words,

Micheldever Spoil Heaps (173 words) [view diff] exact match in snippet view article find links to article

Application of equilibrium constant

Permeation (2,108 words) [view diff] exact match in snippet view article find links to article

{\displaystyle K} into this equation, which represents the reaction equilibrium constant. From the relationship S = K p N {\displaystyle S={K{\sqrt {p_{N}}}}}

Ethanol-induced non-lamellar phases in phospholipids (4,689 words) [view diff] exact match in snippet view article find links to article

homogenously, or heterogeneously. Their interactions are measured by the equilibrium constant (K) which will be described in further detail under the significance

Job plot (726 words) [view diff] exact match in snippet view article find links to article

concentrations are used. The plot also provides insight to understand the equilibrium constant (Keq) of complex formation. A greater curvature leads to a more evenly

Polymer adsorption (3,145 words) [view diff] exact match in snippet view article find links to article

{\displaystyle A-S} is the bound adsorbate/binding site pair The equilibrium constant for this reaction is then defined as: k a d = [ A − S ] [ A ] [ B

Triisobutylaluminium (344 words) [view diff] exact match in snippet view article find links to article

Triisobutylaluminium exists in equilibrium with its dimer. The equilibrium constant, KD, is 3.810 at 20 °C. 2 Al(CH2CH(CH3)2)3 ↽ − ⇀ {\displaystyle {\ce

Gravimetric analysis (2,986 words) [view diff] exact match in snippet view article find links to article

the thermodynamic equilibrium constant (i.e. in absence of diverse ions) and we have to consider the concentration equilibrium constant or use activities

Gravimetric analysis (2,986 words) [view diff] exact match in snippet view article find links to article

the thermodynamic equilibrium constant (i.e. in absence of diverse ions) and we have to consider the concentration equilibrium constant or use activities

Trioctylamine (392 words) [view diff] exact match in snippet view article find links to article

monocarboxylic acid for equilibria and correlation of apparent reactive equilibrium constant. Liquid-liquid equilibria for aqueous solutions of carboxylic acids

Ester (4,351 words) [view diff] exact match in snippet view article find links to article

presence of a dehydrating agent: RCO2H + R'OH ⇌ RCO2R' + H2O The equilibrium constant for such reactions is about 5 for typical esters, e.g., ethyl acetate

Reactivity (chemistry) (1,202 words) [view diff] exact match in snippet view article

particle size. Hydrogen does not react with oxygen—even though the equilibrium constant is very large—unless a flame initiates the radical reaction, which

Chemical transport reaction (619 words) [view diff] exact match in snippet view article find links to article

(which can be quite hot) of the reactor to a hot end, where the equilibrium constant is less favorable and the crystals grow. The reaction of molybdenum

Bromothymol blue (995 words) [view diff] case mismatch in snippet view article find links to article

Elsbeth; Doyle, Robert; Gross, Erin; Mattson, Bruce (2011). "The Equilibrium Constant for Bromothymol Blue: A General Chemistry Laboratory Experiment Using

Flash evaporation (1,315 words) [view diff] exact match in snippet view article find links to article

be known); β is the fraction of feed that is vaporised; Ki is the equilibrium constant of component i. The equilibrium constants Ki are in general functions

Acid–base reaction (4,969 words) [view diff] exact match in snippet view article find links to article

PO 4 − {\displaystyle {\ce {AH + HPO4^2- <=> A- + H2PO4-}}} The equilibrium constant for this reaction can be derived from the acid dissociation constants

Irwin Rose (1,344 words) [view diff] exact match in snippet view article find links to article

cycle, describing the purification of the enzyme and measuring the equilibrium constant of the reaction. With Edward O'Connell, Rose investigated the mechanisms

Jane Mellanby (1,410 words) [view diff] exact match in snippet view article find links to article

blood" (1962, with Dermot H. Williamson and Hans A. Krebs) "The equilibrium constant of the β-hydroxybutyric-dehydrogenase system" (1962, with Dermot

Saturated calomel electrode (1,218 words) [view diff] exact match in snippet view article find links to article

Which can be simplified to the precipitation reaction, with the equilibrium constant of the solubility product. Hg 2 2 + + 2 Cl − ↽ − − ⇀ Hg 2 Cl 2 (

Adenylate kinase (2,459 words) [view diff] exact match in snippet view article find links to article

energy homeostasis. The reaction catalyzed is: ATP + AMP ⇔ 2 ADP The equilibrium constant varies with condition, but it is close to 1. Thus, ΔGo for this reaction

Enol (1,278 words) [view diff] exact match in snippet view article find links to article

more generally applied to all such tautomerizations. Usually the equilibrium constant is so small that the enol is undetectable spectroscopically. In some

Ferroin (474 words) [view diff] case mismatch in snippet view article find links to article

Kinetics and Equilibrium Experiment: Rate Law, Activation Energy, and Equilibrium Constant for the Dissociation of Ferroin". Journal of Chemical Education.

Filter binding assay (514 words) [view diff] exact match in snippet view article find links to article

of a particular protein-DNA interaction, for example. Measure the equilibrium constant: Incubate labeled DNA with protein. Allow enough time to allow the

Ketone (2,948 words) [view diff] exact match in snippet view article find links to article

serve as catalysts in this context, despite the highly unfavorable equilibrium constant for protonation (Keq < 10−10). An aldehyde differs from a ketone

Dimethylformamide (1,979 words) [view diff] exact match in snippet view article find links to article

10−5 hPa·m3/mol can be deduced from an experimentally determined equilibrium constant at 25 °C. The partition coefficient log POW is measured to −0.85

Silver bromide (1,960 words) [view diff] exact match in snippet view article find links to article

probability of ejection of the hole back into the valence band (the equilibrium constant for hole-complex in the interior of the crystal is estimated at 10−4

Tropylium cation (848 words) [view diff] exact match in snippet view article find links to article

(Boric acid gives acidic aqueous solutions in much the same way.) The equilibrium constant is 1.8×10−5, making it about as acidic in water as acetic acid. The

Spectrophotometry (3,649 words) [view diff] exact match in snippet view article find links to article

experiment in which spectrophotometry is used is the determination of the equilibrium constant of a solution. A certain chemical reaction within a solution may

Micelle (3,027 words) [view diff] exact match in snippet view article find links to article

mechanism rather than a dissociation/association mechanism and the equilibrium constant for this reaction is on the order of 10−4 to 10−11, which means about

Isoelectric point (2,871 words) [view diff] exact match in snippet view article find links to article

Glycine may exist as a zwitterion at the isoelectric point, but the equilibrium constant for the isomerization reaction in solution H 2 NCH 2 CO 2 H ↽ − −

Chlorine (13,006 words) [view diff] exact match in snippet view article find links to article

slow at temperatures below 70 °C in spite of the very favourable equilibrium constant of 1027. The chlorate ions may themselves disproportionate to form

Dicyclopentadiene (1,046 words) [view diff] exact match in snippet view article find links to article

dicyclopentadiene is more thermodynamically favorable at high temperatures. Equilibrium constant measurements imply that ΔH° = –18 kcal/mol and ΔS° = –40 eu for cyclopentadiene

Transition metal hydride (2,641 words) [view diff] exact match in snippet view article find links to article

Since hydride does not exist as a stable anion in solution, this equilibrium constant (and its associated free energy) are calculated from measurable equilibria

Phenol (4,791 words) [view diff] exact match in snippet view article find links to article

tautomer cyclohexadienone, but the effect is nearly negligible. The equilibrium constant for enolisation is approximately 10−13, which means only one in every

Disulfide (4,480 words) [view diff] exact match in snippet view article find links to article

Although the hydrogenation of disulfides is usually not practical, the equilibrium constant for the reaction provides a measure of the standard redox potential

Adiabatic flame temperature (1,776 words) [view diff] exact match in snippet view article find links to article

{2}}+H_{2}\Leftrightarrow {\rm {CO}}+{\rm {H}}_{\rm {2}}{\rm {O}}} and use the equilibrium constant for this reaction, we will have enough variables to complete the

Associative substitution (1,140 words) [view diff] exact match in snippet view article find links to article

+ KE[Y]) A further insight into the pre-equilibrium step and its equilibrium constant KE comes from the Fuoss-Eigen equation proposed independently by

Nucleic acid thermodynamics (2,915 words) [view diff] exact match in snippet view article find links to article

acid AB from single-stranded nucleic acids A and B. AB ↔ A + B The equilibrium constant for this reaction is K = [ A ] [ B ] [ A B ] {\displaystyle K={\frac

Salt bridge (protein and supramolecular) (2,618 words) [view diff] exact match in snippet view article

universal gas constant, T is the temperature in kelvins, and Keq is the equilibrium constant of a reaction in equilibrium. The deprotonation of His31 is an acid

Chromium(III) phosphate (1,667 words) [view diff] exact match in snippet view article

Kurbatov equation is used to relate the release of H+ ion to the equilibrium constant of the reaction: Log Kd = log Kex + npHeq where Kd (l g-1) represents

Robert A. Alberty (940 words) [view diff] case mismatch in snippet view article find links to article

Relationship between Michaelis Constants, Maximum Velocities and the Equilibrium Constant for an Enzyme-catalyzed Reaction". Journal of the American Chemical

Acetone (5,066 words) [view diff] exact match in snippet view article find links to article

Jerry; Tang, Yui S.; Wirz, Jakob (1984). "The pKa and keto-enol equilibrium constant of acetone in aqueous solution". Journal of the American Chemical

Receptor theory (2,007 words) [view diff] exact match in snippet view article find links to article

to agonists. It was Heinz Otto Schild who made measurement of the equilibrium constant for the binding of an antagonist possible. He developed the Schild

Reactions on surfaces (2,023 words) [view diff] exact match in snippet view article find links to article

is the Langmuir isotherm for the surface coverage. The adsorption equilibrium constant K 1 = k 1 k − 1 {\displaystyle K_{1}={\frac {k_{1}}{k_{-1}}}} , and

Drug design (5,022 words) [view diff] exact match in snippet view article find links to article

to Gibbs free energy equation, the relation between dissociation equilibrium constant, Kd, and the components of free energy was built. Various computational

Hill equation (biochemistry) (3,326 words) [view diff] exact match in snippet view article

{\textstyle K_{\rm {d}}={k_{\rm {d}} \over k_{\rm {a}}}} ). Kd is the equilibrium constant for dissociation. K A {\textstyle K_{A}} is defined so that ( K A

Chemical reaction (8,028 words) [view diff] exact match in snippet view article find links to article

change in the concentrations of the reactants does not affect the equilibrium constant but does affect the equilibrium position. Chemical reactions are

Mass balance (3,355 words) [view diff] exact match in snippet view article find links to article

use the law of mass action to derive the expression for a chemical equilibrium constant. Assume we have a closed reactor in which the following liquid phase

Industrial catalysts (3,063 words) [view diff] exact match in snippet view article find links to article

alone increases exit-stream temperatures to unacceptable levels. The equilibrium constant for the reaction is given as: Low temperatures will therefore shift

Glossary of chemistry terms (18,187 words) [view diff] exact match in snippet view article find links to article

quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base

Glycolysis (8,782 words) [view diff] exact match in snippet view article find links to article

oxidizing enzyme and cozymase. Meyerhoff and Junowicz found that the equilibrium constant for the isomerase and aldoses reaction were not affected by inorganic

Sonogashira coupling (5,436 words) [view diff] exact match in snippet view article find links to article

trans–RPdX(PPh3)2 complexes by substituting one PPh3 ligand. The equilibrium constant of this reaction is dependent on R, X, a factor for basicity, and

Metalloprotein (5,303 words) [view diff] exact match in snippet view article find links to article

it the iron(II) would be irreversibly oxidized to iron(III). The equilibrium constant for the formation of HbO2 is such that oxygen is taken up or released

Carbon dioxide (13,020 words) [view diff] exact match in snippet view article find links to article

ionization in water is incomplete. CO2 + H2O ⇌ H2CO3 The hydration equilibrium constant of carbonic acid is, at 25 °C: K h = [ H 2 CO 3 ] [ CO 2 ( aq ) ]

Neon compounds (4,147 words) [view diff] case mismatch in snippet view article find links to article

Tamariz, Joaquín; Cross, R. James (March 2001). "Binding Energy in and Equilibrium Constant of Formation for the Dodecahedrane Compounds He@C12H12 and Ne@C12H12"

Leonite (3,006 words) [view diff] exact match in snippet view article find links to article

logarithmic solubility product Ksp for leonite is −9.562 at 25 °C. The equilibrium constant log K at 25 °C is −3.979. The chemical potential of leonite is μj°/RT = −1403

Methyldiborane (2,131 words) [view diff] exact match in snippet view article find links to article

equilibrium with a mixture of diborane and dimethyldiborane. At 0° the equilibrium constant for 2B2H5Me ←→ B2H6 + (BH2Me)2 is around 0.07, so monomethyldiborane

Pyruvate, water dikinase (1,409 words) [view diff] exact match in snippet view article find links to article

kcat of 11.9(s-1) and apparent kcat/Km of 0.315(mM-1 • s-1). The equilibrium constant Keq of the reaction is 1.07 at 50˚C, and the change in Gibbs free

Thin film (8,209 words) [view diff] exact match in snippet view article find links to article

such as Langmuir model and BET model. The Langmuir model derives an equilibrium constant b {\displaystyle b} based on the adsorption reaction of vapor adatom

3,9-Divinyl-2,4,8,10-tetraoxaspiro(5.5)undecane (1,011 words) [view diff] exact match in snippet view article

42-42 °C. The degree of conversion to acetal is determined by the equilibrium constant of the reaction: The most common technique to complete the acetal

Heat equation (9,818 words) [view diff] exact match in snippet view article find links to article

Thus, the condition is fulfilled in situations in which the time equilibrium constant is fast enough that the more complex time-dependent heat equation

Clumped isotopes (3,192 words) [view diff] exact match in snippet view article find links to article

temperature, to the left with increasing temperature. Therefore, the equilibrium constant for this reaction can be used as an paleotemperature indicator, as

Lactate shuttle hypothesis (2,618 words) [view diff] exact match in snippet view article find links to article

concentrations that are orders of magnitude greater than pyruvate: first, the equilibrium constant of LDH(3.6 x 104) greatly favors the formation of lactate. Secondly

Hydrolysis constant (5,187 words) [view diff] no match in snippet view article find links to article

The word hydrolysis is applied to chemical reactions in which a substance reacts with water. In organic chemistry, the products of the reaction are usually

Ion chromatography (6,991 words) [view diff] exact match in snippet view article find links to article

stationary phase. The selectivity coefficient, the equivalent to the equilibrium constant, is determined via a ratio of the concentrations between the resin

Solid oxide fuel cell (9,029 words) [view diff] exact match in snippet view article find links to article

having background hydrogen which is calculated below. At 453 K the equilibrium constant is 7.39 x 10−5 ΔG calculated at 453 K was 35.833 kJ/mol Using the

Reversible Hill equation (856 words) [view diff] exact match in snippet view article find links to article

Michaelis-Menten equation that is irreversible. When setting the equilibrium constant to infinity, the equation can be seen to revert to the simpler case

Lambert W function (11,590 words) [view diff] exact match in snippet view article find links to article

having heat capacities that are constant with temperature then the equilibrium constant K obeys ln ⁡ K = a T + b + c ln ⁡ T {\displaystyle \ln K={\frac {a}{T}}+b+c\ln

Elasticity coefficient (3,315 words) [view diff] exact match in snippet view article find links to article

forward K m {\displaystyle K_{m}} , K e q {\displaystyle K_{eq}} the equilibrium constant and K m 2 {\displaystyle K_{m_{2}}} the reverse K m {\displaystyle

Enthalpy–entropy compensation (2,790 words) [view diff] exact match in snippet view article find links to article

temperature β, all the reactions in the series should have the same equilibrium constant (Ki) Δ G i ( β ) = α {\displaystyle \Delta G_{i}(\beta )=\alpha }

Fluorescence correlation spectroscopy (7,886 words) [view diff] exact match in snippet view article find links to article

{k_{on}}{k_{off}}}={\frac {1}{\langle N\rangle }}K} is related to the equilibrium constant K. Most systems with chemical relaxation also show measurable diffusion

Protein film voltammetry (2,553 words) [view diff] exact match in snippet view article find links to article

{\displaystyle k^{0}} . Coupled reactions are reactions whose rate or equilibrium constant is not the same for the oxidized and reduced forms of the species

Reaction progress kinetic analysis (4,772 words) [view diff] exact match in snippet view article find links to article

either entirely or partially (depending on the magnitude of the equilibrium constant) the substrate bound complex. Saturation conditions can be viewed

Polyrotaxane (3,701 words) [view diff] exact match in snippet view article find links to article

improve dynamically the number of threading rings by changing the equilibrium constant. (5) Production of linear macromolecule in the presence of preformed

Department of Pharmacology, University College London (4,098 words) [view diff] exact match in snippet view article find links to article

function of antagonist, it was possible to estimate the dissociation equilibrium constant for the combination of the antagonist with its receptor. Crucially

Reversible Michaelis–Menten kinetics (1,754 words) [view diff] exact match in snippet view article find links to article

one of the four constants can be eliminated and replaced with the equilibrium constant which is more likely to be known. In addition, it allows one to make