Interpretation:
Brownian motion observed in liquid colloids has to be explained.
Concept Introduction:
Colloid: A colloid is a two-phasic heterogeneous mixture where one phase is dispersed in another phase. By changing the nature of the dispersed phase and dispersion medium, a various number of colloids were reported.
Brownian motion: Colloidal particles moves randomly. This random and erratic movement of colloid particles is called Brownian motion.
The random movement for a particle smaller in size and a higher temperature is observed to be stronger.
Answer to Problem 60A
The Brownian motion is due to the bombardment or collision of liquid colloidal particles by the particles of the dispersion medium.
Explanation of Solution
Brownian movement is observed in all colloidal solutions not seen in a true solution. The Brownian motion is due to the bombardment or collision of colloidal particles by the particles of the dispersion medium. Liquid colloids are formed when both the dispersed phase and dispersion medium are liquid. Milk is an example of liquid colloid or emulsion. So, the Brownian motion in liquid colloids is due to the collision between liquid colloidal particles in the mixture.
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