Answer
394.5k+ views
Hint:If you look at the sunlight from a hole or coming from a window, you would notice that it has dust particles in it which are shining as they reflect light but you will also notice that they are not moving in straight line rather they are forming a zig-zag motion which is known as Brownian motion.
Complete step by step process:
Brownian motion is the zig-zag movement of colloidal particles in colloidal solution. It is the result of agitation of molecules in fluid due to kinetic energy in those molecules and then they strike the colloidal particles with full force from opposite directions and hence, that results in the zig-zag motion. If a fluid is less viscous than it would show a strong force of hit to the colloidal particles. The molecules which have diameter less than 1 mu are rarely observed as the particles of the fluid would be bigger than the dispersed phase.
The Diffusion coefficient can be expressed with the Stokes-Einstein equation:
${{D}_{{}^\circ }}=\dfrac{{{k}_{B}}T}{6\pi \eta r}$
Where, ${{D}_{{}^\circ }}$ is the diffusion coefficient
${{k}_{B}}$ is Boltzmann’s constant
T is the absolute temperature
$\eta $ is the viscosity
R is the radius of a spherical particle.
Note: As we can see in the above stated formula that Brownian motion does not depend on the nature of the colloid but does depend on the size of the colloid and viscosity of the solution. The less viscous the fluid is, more will be the movement of the particles.
Complete step by step process:
Brownian motion is the zig-zag movement of colloidal particles in colloidal solution. It is the result of agitation of molecules in fluid due to kinetic energy in those molecules and then they strike the colloidal particles with full force from opposite directions and hence, that results in the zig-zag motion. If a fluid is less viscous than it would show a strong force of hit to the colloidal particles. The molecules which have diameter less than 1 mu are rarely observed as the particles of the fluid would be bigger than the dispersed phase.
The Diffusion coefficient can be expressed with the Stokes-Einstein equation:
${{D}_{{}^\circ }}=\dfrac{{{k}_{B}}T}{6\pi \eta r}$
Where, ${{D}_{{}^\circ }}$ is the diffusion coefficient
${{k}_{B}}$ is Boltzmann’s constant
T is the absolute temperature
$\eta $ is the viscosity
R is the radius of a spherical particle.
Note: As we can see in the above stated formula that Brownian motion does not depend on the nature of the colloid but does depend on the size of the colloid and viscosity of the solution. The less viscous the fluid is, more will be the movement of the particles.
Recently Updated Pages
For x in Rfx left log 2 sin x right and gx ffx then class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
For x in left dfrac pi 2dfracpi 2 right the equation class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
For x a0 the roots of the equation log axa+log xa2-class-11-maths-CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
For x2 left a + 3 rightleft x right + 4 0 to have real class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
For x 1 if 2x2y4e2x2y then 1+log e2x2dfracdydx is equal class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
For x 0 and x not equal to 1 log 16left x right class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)