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  2. Rate equation - Wikipedia

    en.wikipedia.org/wiki/Rate_equation

    Rate equation. In chemistry, the rate equation (also known as the rate law or empirical differential rate equation) is an empirical differential mathematical expression for the reaction rate of a given reaction in terms of concentrations of chemical species and constant parameters (normally rate coefficients and partial orders of reaction) only ...

  3. Chemical kinetics - Wikipedia

    en.wikipedia.org/wiki/Chemical_kinetics

    Chemical kinetics. Chemical kinetics, also known as reaction kinetics, is the branch of physical chemistry that is concerned with understanding the rates of chemical reactions. It is different from chemical thermodynamics, which deals with the direction in which a reaction occurs but in itself tells nothing about its rate.

  4. First-order - Wikipedia

    en.wikipedia.org/wiki/First-order

    First-order logic, a formal logical system used in mathematics, philosophy, linguistics, and computer science. First-order predicate, a predicate that takes only individual (s) constants or variables as argument (s) First-order predicate calculus. First-order theorem provers. First-order theory. Monadic first-order logic.

  5. Thiele modulus - Wikipedia

    en.wikipedia.org/wiki/Thiele_modulus

    The Thiele Modulus was developed to describe the relationship between diffusion and reaction rates in porous catalyst pellets with no mass transfer limitations. This value is generally used to measure the effectiveness factor of pellets. The Thiele modulus is represented by different symbols in different texts, but is defined in Hill [2] as hT.

  6. Continuous stirred-tank reactor - Wikipedia

    en.wikipedia.org/wiki/Continuous_stirred-tank...

    n th-order reaction (r = kC A n), where k is the reaction rate constant, C A is the concentration of species A, and n is the order of the reaction; isothermal conditions, or constant temperature (k is constant) single, irreversible reaction (ν A = −1) All reactant A is converted to products via chemical reaction; N A = C A V

  7. Plug flow reactor model - Wikipedia

    en.wikipedia.org/wiki/Plug_flow_reactor_model

    Generally, as the temperature increases so does the rate at which the reaction occurs. Residence time, , is the average amount of time a discrete quantity of reagent spends inside the tank. Assume: isothermal conditions, or constant temperature (k is constant) single, irreversible reaction (ν A = -1) first-order reaction (r = k C A)

  8. Plateau principle - Wikipedia

    en.wikipedia.org/wiki/Plateau_Principle

    Plateau principle. The plateau principle is a mathematical model or scientific law originally developed to explain the time course of drug action (pharmacokinetics). [1] The principle has wide applicability in pharmacology, physiology, nutrition, biochemistry, and system dynamics. It applies whenever a drug or nutrient is infused or ingested at ...

  9. Arrhenius equation - Wikipedia

    en.wikipedia.org/wiki/Arrhenius_equation

    Arrhenius equation. In physical chemistry, the Arrhenius equation is a formula for the temperature dependence of reaction rates. The equation was proposed by Svante Arrhenius in 1889, based on the work of Dutch chemist Jacobus Henricus van 't Hoff who had noted in 1884 that the van 't Hoff equation for the temperature dependence of equilibrium ...