Why lyophilic colloid is more stable than lyophobic colloid?
Answers
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Answer:
In general, lyophilic sols are more stable than lyophobic sols. The additional stability is due to the presence of an envelop of the solvent (say water) around the colloidal particle. The process is known as hydration. To coagulate a hydrophilic sol, we have to add a dehydrating agent in addition to an electrolyte.
Explanation:
Lyophilic sols are more stable than lyophobic sols. This is due to the fact that lyophilic colloids are extensively solvated, i.e., colloidal particles are covered by a sheath of the liquid in which they are dispersed. Forces of interaction between colloidal particles and liquid are quite strong.
Lyophilic colloids have great affinity towards dispersion medium as they are greatly solvated hence lyophilic colloids are more stable and are reversible in nature due to its solvent loving nature
Lyophilic colloids are more stable than lyophobic colloids due to the presence of strong attractive forces between the molecules of liquid and colloid.
Explanation:
The word "lyo" means solvent and "philic" means loving. Hence, lyophilic colloids are defined as the colloids which when mixed with a suitable liquid then strong force of attraction exists between the liquid and colloidal particles.
Hence, lyophilic colloids are very stable in nature due to the existence of strong forces of attraction between the liquid and colloid molecules. Whereas lyophobic colloids are solvent hating in nature.
This means there is weak force of attraction between liquid and colloid molecules in a lyophobic colloid. For example, gelatin, starch etc are lyophobic colloids.