Fick’s First Law of Diffusion
Fick’s First Law of Diffusion is a scientific principle that describes the movement of particles from an area of high concentration to an area of low concentration.
Fick’s First Law of Diffusion states that the rate of diffusion of a substance through a medium is directly proportional to the concentration gradient i.e., rate change of concentration with respect to position, of the substance in that medium.
Formula for Fick’s First Law
Mathematical formula for Fick’s first law of diffusion is:
J = -D dϕ/dx
Where,
- J is a diffusion flux,
- D is diffusivity,
- Φ is concentration, and
- x is position.
Fick’s Law of Diffusion
Fick’s Law of Diffusion is an important principle in physics and chemistry. This law describes the rate at which particles (such as molecules, atoms, or ions) diffuse through a medium. It was formulated by Adolf Fick, a German physiologist, in the 19th century. It helps us understand how molecules move and diffuse in space, and in which direction they migrate.
In simple words, Fick’s law states that molecules diffuse in space from a point of higher concentration to a point of lower concentration. In this article, we will learn about all related topics to Fick’s Law of Diffusion. This article includes both the first and second laws along with their derivations. Additionally, we will discuss some common applications of this law.
Table of Content
- What is Diffusion?
- What is Fick’s Law of Diffusion?
- Fick’s Law of Diffusion Formula
- Fick’s First Law of Diffusion
- Fick’s Second Law of Diffusion
- Application of Fick’s Law of Diffusion
- Conclusion
- Sample Problems on Fick’s Law of Diffusion
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