- activity coefficients
- • коефициент на активност
English-Bulgarian polytechnical dictionary . 2013.
English-Bulgarian polytechnical dictionary . 2013.
Activity (chemistry) — In chemical thermodynamics, activity (symbol a) is a measure of the “effective concentration” of a species in a mixture, meaning that the species chemical potential depends on the activity of a real solution in the same way that it would depend… … Wikipedia
Activity coefficient — An activity coefficient [ [http://www.iupac.org/goldbook/A00116.pdf Gold Book definition] ] is a factor used in thermodynamics to account for deviations from ideal behaviour in a mixture of chemical substances. In an ideal mixture the… … Wikipedia
Margules activity model — Contents 1 Introduction 2 Equations 3 Excess Gibbs free energy 4 Activity coefficient 5 Extrema … Wikipedia
Voice activity detection — (also known as speech activity detection or, more simply, speech detection) is an algorithm used in speech processing wherein the presence or absence of human speech is detected in regions of audio. The main uses of VAD are in speech coding and… … Wikipedia
liquid — liquidly, adv. liquidness, n. /lik wid/, adj. 1. composed of molecules that move freely among themselves but do not tend to separate like those of gases; neither gaseous nor solid. 2. of, pertaining to, or consisting of liquids: a liquid diet. 3 … Universalium
Chemical equilibrium — In a chemical reaction, chemical equilibrium is the state in which the concentrations of the reactants and products have not yet changed with time. It occurs only in reversible reactions, and not in irreversible reactions. Usually, this state… … Wikipedia
Debye–Hückel theory — The Debye–Hückel theory was proposed by Peter Debye and Erich Hückel as a theoretical explanation for departures from ideality in solutions of electrolytes.[1] It was based on an extremely simplified model of the electrolyte solution but… … Wikipedia
UNIFAC — [ azeotrope calculated with UNIFAC at 1 atm. Red lines are vapor compositions and blue lines are liquid compositions. Image is rotating to more clearly show the saddle like shape of the Vapor Liquid Equilibria] The UNI versal F unctional A… … Wikipedia
UNIQUAC — (short for UN iversal QUA si C hemical) is an activitycoefficient model in which the activity coefficients, γ, of the components in achemical mixture can be related through their molar fraction,xi [Abrams D.S., Prausnitz J.M.,… … Wikipedia
Non-random two-liquid model — VLE of the mixture of Chloroform and Methanol plus NRTL fit and extrapolation to different pressures The non random two liquid model[ … Wikipedia
Debye–Hückel equation — The Debye–Hückel equation and Debye–Hückel limiting law, were derived by Peter Debye and Erich Hückel, who developed a theory with which to calculate activity coefficients of electrolyte solutions.[1] Activities, rather than concentrations, are… … Wikipedia