equação de nernst planck - EAS

54,800 results
  1. Equação NernstPlanck Origem: Wikipédia, a enciclopédia livre. A equação de NernstPlanck é uma equação de conservação de massa usada para descrever o movimento de espécies químicas em um meio fluido.
    pt.wikipedia.org/wiki/Equa%C3%A7%C3%A3o_Nernst%E2%80%93Planck
    pt.wikipedia.org/wiki/Equa%C3%A7%C3%A3o_Nernst%E2%80%93Planck
    Was this helpful?
  2. People also ask
    What is the extended Nernst-Planck equation?
    The extended Nernst–Planck equation then reads where v represents the flow velocity and J i conv, J i diff, and J i migr are the parts of the molar flux intensity of the i th component Ji given by convection, diffusion, and migration, respectively.
    www.sciencedirect.com/topics/engineering/nernst-planc…
    Why is the Nernst Planck equation used in soil mechanics?
    is the magnetic vector potential . If the diffusing particles are themselves charged they are influenced by the electric field. Hence the Nernst–Planck equation is applied in describing the ion-exchange kinetics in soils. Setting time derivatives to zero, and the fluid velocity to zero (only the ion species moves),
    en.wikipedia.org/wiki/Nernst%E2%80%93Planck_equation
    What is the Nernst Planck equation for ionic transport?
    The transport of ions in the solution is governed by the well-known Nernst-Planck equation as follows: where fj, nj, and Dj are respectively the ion flux, the ion number density, and the diffusivity of the ionic species j, e the elementary charge density, k the Boltzmann constant, T the absolute temperature, and v the fluid velocity.
    www.sciencedirect.com/topics/engineering/nernst-planc…
    What is the Nernst equation?
    The Nernst equation relates pH and where curly brackets indicate activities, and exponents are shown in the conventional manner. This equation is the equation of a straight line for volt (pH has no units). at higher pH values. This is observed for the reduction of O 2 into H 2 O, or OH −, and for the reduction of H + into H 2.
    en.wikipedia.org/wiki/Nernst_equation
  3. See more
    See all on Wikipedia

    Nernst–Planck equation - Wikipedia

    The Nernst-Planck equation is a continuity equation for the time-dependent concentration. c ( t , x ) {\displaystyle c (t, {\bf {x}})} of a chemical species: ∂ c ∂ t + ∇ ⋅ J = 0 {\displaystyle {\partial c \over {\partial t}}+\nabla \cdot {\bf {J}}=0} where. J {\displaystyle {\bf {J}}} is the flux.

     ...

    See more

    The Nernst–Planck equation is a conservation of mass equation used to describe the motion of a charged chemical species in a fluid medium. It extends Fick's law of diffusion for the case where the diffusing particles are also

     ...

    See more

    The Nernst-Planck equation is a continuity equation for the time-dependent concentration of a chemical species:
    where is th

     ...

    See more

    The Nernst–Planck equation is applied in describing the ion-exchange kinetics in soils. It has also been applied to membrane electrochemistry.

     ...

    See more
    Wikipedia text under CC-BY-SA license
    Feedback
  4. Equação Nernst–Planck – Wikipédia, a enciclopédia livre

    A equação de Nernst–Planck é uma equação de conservação de massa usada para descrever o movimento de espécies químicas em um meio fluido. Descreve o fluxo de íons sob a influência conjunta de um gradiente de concentração iônica e de um campo elétrico . Ela estende a lei de Fick da difusão para o caso onde as partículas em difusão são também movidas em relação ao fluido por forças eletrostáticas. Se as partículas em difusão são elas mesmas carregadas, influencia…

    • Estimated Reading Time: 1 min
    • Based on these assumptions, the one-dimensional form of the Nernst–Planck equation for cation transport will be: (6.13) ∂ c + ∂ t = D ∂ ∂ x ∂ c + ∂ x + F RT c + ∂ V ∂ x . Because we are interested in the charge density dynamic of material to relate it to electric current, we rewrite Eq.

    • Ecuación de Nernst-Planck. La densidad de corriente es una función de un potencial electromecánico escalar : j → = − k y más ∇ ϕ y más La ley de Fick y la ley de Ohm pueden ser superpuestas: J → = − D más ∇ ϕ más − μ ϕ más ∇ ϕ y {\displaystyle {\vec {j}}= - d_ {m}\nabla \phi _ {m} - \ mu \phi _ {m}\nabla \phi _ {e ...

    • The Nernst equation is frequently expressed in terms of base-10 logarithms (i.e., common logarithms) rather than natural logarithms, in which case it is written: E = E ⊖ − V T z ln ⁡ a Red a Ox = E ⊖ − λ V T z log 10 ⁡ a Red a Ox . {\displaystyle E=E^{\ominus }-{\frac {V_{T}}{z}}\ln {\frac {a_{\text{Red}}}{a_{\text{Ox}}}}=E^{\ominus }-{\frac {\lambda V_{T}}{z}}\log _{10}{\frac …

    • Equação de Nernst-Planck e equações derivadas

      Equação deNernst-Planck e equações derivadas. eq.1 µ = µo+RT lnC + vP + zFV (Potencialeletroquímico) eq.2 J = - mCdµ/dx (Equação de Nernst-Planck) eq.3 dµ/dx = RTdlnC/dx + v dP/dx + z F dV/dx (Força local) Difusão: fluxo movido por gradiente deconcentração.

    • (PDF) The Nernst-Planck Equation.pdf | Whitaker, Stephen

      The N th equation in this set is given by the sum of the ∑ species momentum equations which takes the form A= N ( ρv ) + ∇ ⋅ ( ρvv ) = ρb + ∇ ⋅ T − ∇ ⋅ ∂ ρ Au Au A ∂t (12) A =1 ∑ ∑ Here the following definitions have been used for the total stress tensor and the total body force: =A N=A N T= TA , ρb = ρ Ab A (13 ...

    • Nernst-Planck Equation System — Hermes Examples …

      The Nernst-Planck equation is often used to describe the diffusion, convection, and migration of charged particles: (1) The second term on the left side is diffusion and the third term is the migration that is directly related to the the …

    • EMF da célula - O EMF da célula ou força eletromotriz de uma célula de uma célula é a diferença potencial máxima entre dois eletrodos de uma célula. (Medido em Volt) Temperatura - Temperatura é o grau ou intensidade de calor presente em uma substância ou objeto. (Medido em Kelvin) Quociente de Reação - O quociente de reação (Q) mede as quantidades relativas de

    • Mathematische Herleitung der vereinfachten Nernst-Gleichung : Die Nernst-Gleichung in allgemeiner Form = + ⁡ kann vereinfacht werden. Hierzu nimmt man an, dass eine Temperatur von = = vorherrscht. Setzt man nun die allgemeine Gaskonstante und die Faraday-Konstante ein, erhält man: = +, ⁡ Nun soll der natürliche Logarithmus in einen dekadischen Logarithmus umgeformt …



    Results by Google, Bing, Duck, Youtube, HotaVN