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The random thermal motion of molecules from a region of higher concentration to a region of lower concentration is called diffusion. The rate of diffusion across a barrier is defined by Fick’s law of diffusion:_________

Respuesta :

Answer:

[tex]\frac{dq}{dt} =-DA\frac{dc}{dx}[/tex]

Explanation:

Fick's law of diffusion describes the times course of transfer of matter from a region of high concentration to a region of lower concentration separated by a thin barrier membrane.

Mathematically:

[tex]\frac{dq}{dt} =-DA\frac{dc}{dx}[/tex]

where:

  • q = quantity of solute
  • t = time
  • A = membrane surface area
  • c = concentration
  • D = diffusion coefficient
  • dx = membrane thickness
  • [tex]\frac{dc}{dx}[/tex] = concentration gradient

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