Tamilnadu BoardEnglish MediumSTD 12ChemistrySurface Chemistry3 Marks
Question
What is meant by Brownian movement?
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Answer
1. Robert Brown observed that when the pollen grains suspended in water were viewed through an ultra microscope, they showed a random, zigzag, ceaseless motion. This is called Brownian movement of colloidal particles. 2. The colloidal sol particles are continuously bombard with the molecules of dispersion mediuri and hence they follow a zigzag. random, continuous movement.
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