Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Constants with

T were eliminated beyond that point, the vapor-phase correction, as calculated here, is inadequate and the liquid molar volume is no longer constant with pressure. [Pg.139]

In the above section a hannonic model is described for calculating RRKM rate constants with hamionic sums and densities of states. This rate constant, denoted by Ic iE, J), is related to the actual anhamionic RRKM rate constant by... [Pg.1020]

Miller W H 1979 Tunneling corrections to unimolecular rate constants, with applications to formaldehyde J. Am. Chem. See. 101 6810-14... [Pg.1040]

The only tenn in this expression that we have not already seen is a, the vibration-rotation coupling constant. It accounts for the fact that as the molecule vibrates, its bond length changes which in turn changes the moment of inertia. Equation B1.2.2 can be simplified by combming the vibration-rotation constant with the rotational constant, yielding a vibrational-level-dependent rotational constant. [Pg.1153]

Using the Condon approximation, the transition dipole moment is taken to be a constant with respect to the nuclear coordinates. Equation (26) then reduces to the familiar expression... [Pg.269]

Breslow studied the dimerisation of cyclopentadiene and the reaction between substituted maleimides and 9-(hydroxymethyl)anthracene in alcohol-water mixtures. He successfully correlated the rate constant with the solubility of the starting materials for each Diels-Alder reaction. From these relations he estimated the change in solvent accessible surface between initial state and activated complex " . Again, Breslow completely neglects hydrogen bonding interactions, but since he only studied alcohol-water mixtures, the enforced hydrophobic interactions will dominate the behaviour. Recently, also Diels-Alder reactions in dilute salt solutions in aqueous ethanol have been studied and minor rate increases have been observed Lubineau has demonstrated that addition of sugars can induce an extra acceleration of the aqueous Diels-Alder reaction . Also the effect of surfactants on Diels-Alder reactions has been studied. This topic will be extensively reviewed in Chapter 4. [Pg.26]

The rate constants for the catalysed Diels-Alder reaction of 2.4g with 2.5 (Table 2.3) demonstrate that the presence of the ionic group in the dienophile does not diminish the accelerating effect of water on the catalysed reaction. Comparison of these rate constants with those for the nonionic dienophiles even seems to indicate a modest extra aqueous rate enhancement of the reaction of 2.4g. It is important to note here that no detailed information has been obtained about the exact structure of the catalytically active species in the oiganic solvents. For example, ion pairing is likely to occur in the organic solvents. [Pg.56]

The operation of the nitronium ion in these media was later proved conclusively. "- The rates of nitration of 2-phenylethanesulphonate anion ([Aromatic] < c. 0-5 mol l i), toluene-(U-sulphonate anion, p-nitrophenol, A(-methyl-2,4-dinitroaniline and A(-methyl-iV,2,4-trinitro-aniline in aqueous solutions of nitric acid depend on the first power of the concentration of the aromatic. The dependence on acidity of the rate of 0-exchange between nitric acid and water was measured, " and formal first-order rate constants for oxygen exchange were defined by dividing the rates of exchange by the concentration of water. Comparison of these constants with the corresponding results for the reactions of the aromatic compounds yielded the scale of relative reactivities sho-wn in table 2.1. [Pg.10]

The variation of the observed second-order rate constant with acidity. [Pg.146]

Table 7.61 Carbon-13 Coupling Constants with Various Nuclei 7.110... Table 7.61 Carbon-13 Coupling Constants with Various Nuclei 7.110...

See other pages where Constants with is mentioned: [Pg.218]    [Pg.453]    [Pg.807]    [Pg.884]    [Pg.1351]    [Pg.1923]    [Pg.281]    [Pg.523]    [Pg.30]    [Pg.155]    [Pg.155]    [Pg.118]    [Pg.121]    [Pg.735]   
See also in sourсe #XX -- [ Pg.5 , Pg.8 , Pg.82 , Pg.89 , Pg.97 , Pg.99 , Pg.100 ]

See also in sourсe #XX -- [ Pg.5 , Pg.8 , Pg.82 , Pg.89 , Pg.97 , Pg.99 , Pg.100 ]




SEARCH



1,10-Phenanthroline, formation constants with

2,2-Dipyridyl, formation constants with

5-Quinolinol, formation constants with

AMX, ABX, and ABC Rigid Systems with Three oupling Constants

Acetate, formation constants with

Acetic acid formation constants with

Acetylacetone, formation constants with

Acid-dissociation constant anion reaction with

Acid-dissociation constant cation reaction with

Acidity constant variation with solvent

Adiabatic Expansion (Compression) with Constant Heat Capacity

Alkanes rate constants with

Alkenes rate constants with

Alkylations, with alcohols rate constants

Alkynes rate constants with

Ammonia formation constants with

An Oscillatory Reaction with Constant Input of Reactants

Aqueous solution data rate constant with hydroxyl radical

Aromatic hydrocarbons rate constants with

Avidin affinity constant with biotin

Batch Distillation with Constant Distillate Composition

Binary Batch Distillation with Constant Reflux

Bromide, formation constants with

Carbon-13 spin coupling constants with various nuclei

Carbon-proton coupling constants relationship with structure

Changing Temperature Load with Constant Aging Mechanisms

Channel with Constant Temperature of the Wall

Chloride, formation constants with

Citric acid, formation constants with

Compound A substance with constant

Compound A substance with constant composition that can be broken down into

Compound A substance with constant composition that can be broken down into elements by chemical processes

Concentration calculating with acid-ionization constants

Concentration calculating with base-ionization constants

Concentration calculating with equilibrium constants

Constant flow rates leaching with

Constant heat flow, Calorimeter with

Constant ionic strength buffers with added electrolyte

Conversion constant with

Correction Together with the Refinement of Lattice Constants

Correlation of Coupling Constants with Other Physical Properties

Correlations with dielectric constant

Correllation with van der Waals constants

Coupling constant variation with dihedral angle

Coupling constant with bond length, correlation

Coupling constants correlation with physical properties

Cyanide, formation constants with

Detection with constant working potential

Dielectric Relaxation in Materials with a Single Time Constant

Dielectric constant variation with concentration

Dielectric constant water, changes with temperature

Dielectric constants correlation with molecular structure

Difference method with constant material properties

Differential equation with constant coefficients

Differential equations solution with constant coefficients

Differential with constant

Diffusion with change of phase constant

Distillation with constant distillate quality

Distillation with constant distillate rate

Elastic constants relation with force constant

Electrostatic energy, variation with dielectric constant

Equilibrium Constant for Reactions with Three or More Decomposition Products

Equilibrium constant changes with temperature

Equilibrium constant expression approximation method calculations with

Equilibrium constant system with small

Equilibrium constant variation with

Equilibrium constant variation with temperature

Equilibrium constants relationship with Gibbs energy change

Equilibrium constants relationship with standard Gibbs energy

Equilibrium constants vary with temperature

Equilibrium constants, for reactions with thiolate and

Estimation of heat flow through a composite wall with constant thermal conductivities

Ethane rate constant with hydroxyl radical

Ethanolamine, formation constants with

Ethylenediamine, formation constants with

Ethylenediaminetetraacetate stability constants with

Eutectic batch melting with constant

Extraction, advantages with constant selectivity

First with unknown constant parameter

Fluoride, formation constants with

Fonnation constants with

Force constants, correlation with coupling

Formation constants with EDTA

Frame of reference rotating with a constant angular velocity (two-dimensional case)

Free energy relationship with equilibrium constant

Gibb relationship with equilibrium constant

Glycine, formation constants with

Hammett constants, correlation with half-wave

Hammett constants, correlation with half-wave potentials

Homogeneous Equations with Constant Coefficients

Homogeneous Linear Differential Equations with Constant Coefficients

Homogeneous Linear Equations with Constant Coefficients

Hydrogen addition reactions with constants

Hydroxide, formation constants with

Incongruent batch melting with constant

Incongruent dynamic melting with constant

Iodate, formation constants with

Iodide, formation constants with

Ionization constants variation with temperature

Ionization: constant: decrease with

Ionization: constant: decrease with polymerization

Kinetic laws of open systems with constant concentrations

Lactic acid, formation constants with

Linear motion, with constant acceleration

Methane rate constant with

Methanol rate constant with hydroxyl radical

Methods with Constant Coefficients

Michaelis constant , variation with

Modal Dynamic Melting with Constant

Modal Fractional Melting with Constant

Model 2 The Ideal Continuous Stirred Tank Reactor (CSTR) with V Constant

Model with Constant Properties

Molecular Dynamics with Constant Energy

Nitrate, formation constants with

Nucleation obeying a power law with constant rate of interface advance (normal growth)

One Spectrum Known with Constant Logarithmic Slope

One-dimensional heat conduction equation with constant coefficients

Oscillatory reactions with constant input of reactants

Oxalate, formation constants with

Phthalic acid, formation constants with

Piperidine, formation constants with

Propagation constant, variation with conversion

Propagation constant, variation with temperature

Pyrophosphate, formation constants with

Radicals) with olefins, relative rate constants

Rate Constants and Their Relation with the Life-Time of Reactive Excited States

Rate constant alkoxy radical with

Rate constant ozone with cycloalkenes

Rate constant peroxy radical with

Rate constant with hydroxyl radical

Rate constant with hydroxyl radical in troposphere

Rate constants correlation with transition

Rate constants with reactive anion

Rate constants with reactive cations

Rates constants with methyl iodide

Reaction Rate Constants of OH, O3, NO3 with Hydrocarbons and Aldehydes

Reaction constant variation with solvent

Reaction rates rate constant compared with

Reduced coupling constant , with

Reduced coupling constant , with decoupling

Resilience test with piecewise constant heat capacities

Rotation with constant acceleration

Salicylic acid, formation constants with

Scaleup with constant heat transfer

Scaling with Constant Pressure Drop

Scanning mode with constant heating rate

Second-Order Linear ODEs With Constant Coefficients

Second-order linear with constant

Series with Constant Terms

Shearing Flow with Constant Stress

Simplification of the Mass Transfer Equation for Pseudo-Binary Incompressible Mixtures with Constant Physical Properties

Simultaneous equations with constant coefficients

Solubility constants with temperature, change

Spin Coupling Constants with Various Nuclei

Stability constants concentration calculations with

Stability constants ionic medium, variation with

Stability constants temperature, variation with

Steady-state flow through a nozzle with constant specific volume

Substrates reactions with constant concentration

Succinic acid, formation constants with

Sulfate, formation constants with

Sulfite, formation constants with

System with constant concentrations

Systems with Constant Mass

Tartaric acid, formation constants with

Temperature constant with

The Hilbert Problem with Constant Coefficient

The heat conduction equation for bodies with constant material properties

The semi-infinite medium with constant surface concentration

Thermal Conductivity Gauges with Constant Filament Heating Power

Thermal Conductivity Gauges with Constant Filament Temperature

Thiocyanate, formation constants with

Thiosulfate formation constants with

Thiourea, formation constants with

Triethanolamine, formation constants with

Tube with Constant Temperature of the Wall

Tungsten coupling constants with

Understanding and Working with Equilibrium Constants

Variation of Dynamic Moduli with Strain Amplitude (at Constant Frequency and Temperature)

Variation of Equilibrium Constant, K, with Overall Total Pressure

Variation of equilibrium constant K with

Variation with temperature rate constant

Volatile organic compound rate constant with

Wafers with High Dielectric Constant

Water dielectric constant change with

With constant heat transfer

© 2024 chempedia.info