Question

Colloidal solution or suspension which shows brownian movement?

Answer 1

Colloidal particles in a sol are continuously bombarded by the molecules of the dispersion medium on all sides. ... As a result, the sol particles show random or zig-zag movements. This random or zig-zag motion of the colloidal particles in a sol is called Brownian motion or Brownian movement.

Answer 2

Colloidal solution shows Brownian movement:

• Brownian movement is the random movement of a particle as a result of collisions with its surrounding gaseous molecules or the uncontrolled motion of particles in a fluid due to their constant collision. It is also called Brownian Motion.
• The Brownian movement effect is seen in all types of colloidal solutions.
• When colloidal solutions are viewed under a powerful ultramicroscope Brownian movement is observed in solution due to the unbalanced collision of the particles by the molecules of the dispersion medium.
• As true solutions or suspensions lack this property of bombardment and hence Brownian movement is not observed.

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