Question

ies What is the Tyndall effect, and how is it used? ht the relationship between Brownian motion and 80 up di colloids? tunntmant disussed in the facet

Answer 1

True solution

Homogeneous mixture of two or more substances in which solute is completely dissolves in solvent.Particle of true solution cannot be visible with naked eye.Particle size < 10^-9 m.

Colloidal solution

It is a hetrogeneous mixture,particles are small enough and cannot be seen through naked eyes.10^-9<Particle size<1000*10^-9.

4.When a beam of light is passed through a colloidal solution,the light scatters from the surface of colloidal particles and reaches our eyes.This phenomena is called tyndall effect.

Tyndall effect is used to determine whether a mixture is true solution or colloidal soltution.

When a beam of light is pass through a true sol,the light passes cleanly through the sol and when the light is passed through a colloidal solution,it scatters the light in all direction and make it easily seen.

5.The zigzag or random motion of colloidal particles is known as brownian motion.The continuous collision between colloidal particles and molecules of dispersion medium passes kinetic energy to colloidal particles,this result in random or zigzag motion of particles.

colloidal particles resist settling rapidly to the bottom due to brownian motion.