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(a) What is coagulation of sol ? name two methods by which a lyophobic sol can be coagulated. (b) What is the change in enthalpy and entropy during adsorption of gas on a solid ? |
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Answer» Solution :(a) The process of settling of colloidal particles is called coagulation of the sol. By electrophoresis or by BOILING or by adding an ELECTROLYTE or by mixing two oppositely charged SOLS. (b) Enthalpy DECREASES or `DELTAH` is negative. Entropy decreases or `DeltaS` is negative. |
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