Chemical Equilibrium
60 terms · page 1 of 3
Activity
The effective concentration of a species, corrected for non-ideal interactions with its surroundings.
Chemical EquilibriumActivity Coefficient
The factor by which a species' concentration must be multiplied to give its thermodynamic activity.
Chemical EquilibriumApproach to Equilibrium
The time-dependent process by which a reacting system moves towards its equilibrium composition.
Chemical EquilibriumAssociation Constant
The equilibrium constant for the combination of two species into a single associated entity, the reciprocal of the dissociation constant.
Chemical EquilibriumChemical Equilibrium
The state of a reversible reaction in which the forward and reverse reactions proceed at equal rates, so no net change in composition…
Chemical EquilibriumCombining Equilibrium Constants
The rule that when two reactions are added, their equilibrium constants multiply.
Chemical EquilibriumCommon Ion Effect
The suppression of the ionisation or dissolution of a substance by adding a second substance that supplies one of the same ions.
Chemical EquilibriumComplex Ion Equilibrium
The equilibrium between a metal ion, its ligands and the resulting complex ion in solution.
Chemical EquilibriumConcentration Equilibrium Constant
The equilibrium constant expressed in terms of the molar concentrations of the species involved.
Chemical EquilibriumCoupled Equilibria
Two or more equilibria that share a common species, so that shifting one necessarily shifts the others.
Chemical EquilibriumDebye–Hückel Limiting Law
The theoretical relation predicting activity coefficients of ions in very dilute solution from their charge and the ionic strength.
Chemical EquilibriumDegree of Dissociation
The fraction of the original substance that has broken apart at equilibrium.
Chemical EquilibriumDissociation Constant
The equilibrium constant for the breaking apart of a compound or complex into smaller species.
Chemical EquilibriumDistribution Law
The principle that a solute distributes itself between two immiscible solvents in a constant ratio at fixed temperature.
Chemical EquilibriumDynamic Equilibrium
An equilibrium in which opposing processes continue at the molecular level but at equal and opposite rates.
Chemical EquilibriumEffect of a Catalyst on Equilibrium
A catalyst changes how quickly equilibrium is reached but never where that equilibrium lies.
Chemical EquilibriumEffect of an Inert Gas
The influence of adding a non-reacting gas on the position of a gaseous equilibrium.
Chemical EquilibriumEffect of Concentration Change
The shift in equilibrium position caused by adding or removing a reactant or product.
Chemical EquilibriumEffect of Pressure Change
The shift in a gaseous equilibrium caused by changing the total pressure through a volume change.
Chemical EquilibriumEffect of Temperature Change
The shift in equilibrium caused by heating or cooling, which uniquely also changes the equilibrium constant.
Chemical EquilibriumEquilibrium Constant
The fixed ratio of product to reactant terms, each raised to its stoichiometric power, that characterises a reaction at a given temperature.
Chemical EquilibriumEquilibrium Constant of a Reversed Reaction
The constant obtained when a reaction is written in the opposite direction, equal to the reciprocal of the original.
Chemical EquilibriumEquilibrium Constant of a Scaled Reaction
The constant obtained when every coefficient in an equation is multiplied by the same factor.
Chemical EquilibriumEquilibrium in Closed Systems
The requirement that no matter enters or leaves for a true chemical equilibrium to be established.