Question

Why lyophilic colloids are more stable than lyophobic colloids

Answer 1

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A lyophilic sol is stable due to the charge and the hydration of sol particles. ... On the other hand, a lyophobic sol is stable due to the charge only and hence can be easily coagulated by adding small amount of an electrolyte.

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Answer 2

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.

Learn more about lyophilic colloids:

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Lyophilic colloids are liquid loving colloids (Lyo means solvent and philic means loving). When these colloids are mixed with the suitable liquid, high force of attraction exists between colloidal particles and liquid. This result in formation of very stable solution called lyophilic sol.