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Comparison of Physisorption and Chemisorption

When colloids...

Question

When colloids are subjected to an electrical field particles move towards an electrode and precipitate. Name the process.

A

Electrophoresis

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B

Peptization

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C

Tyndal effect

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D

Brownian movement

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Solution

The correct option is A
Electrophoresis

Electrophoresis is Movement of colloidal particles towards an electrode, when they are subjected to an electrical field.

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Q. Tyndall effect is thethrough the colloidal system whereas, Brownian movement is the of particles in the fluid.

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Q. a) Write any two differences between physisorption and chemisorption.
b) Name the phenomenon/effect for the following:
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ii) When an electrical potential is applied across two platinum electrodes dipping in a colloidal solution, particles move towards one or the other electrodes.
iii) Scattering of light by colloidal solution.

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p H

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