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Get Answers to all your Questions
Explain the following phenomenon giving reasons :
(i) Tyndall effect
(ii) Brownian movement
(iii) Physical adsorption decreases with an increase in temperature.
Answers (1)
(i) Tyndal Effect is the phenomenon in which the path of light becomes visible when it is passed through a colloidal solution. It occurs due to the scattering of light by large colloidal particles.
(ii) Brownian movement refers to the zig-zag motion of colloidal particles. It occurs due to the unbalanced bombardment of particles by molecules of the dispersion medium.
(iii) Physical adsorption decreases with an increase in temperature because kinetic energy of the molecules increases with an increase in temperature and they overcome the force of attraction by the adsorbent surface.
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