Question

What are the lyophilic and lyophobic colloid?Explain with one example of each.

Answer 1

Definition

Lyophilic : Lyophilic colloids are liquid loving colloids (Lyo means solvent and philic means loving).

Lyophobic : Lyophobic colloids are liquid hating colloids (Lyo means solvent and phobic means hating).

Examples

Lyophilic : Sols of organic substances like gelatin, gum, starch and proteins.

Lyophobic : Sols of inorganic substances like Arsenic (As2S3), Iron (Fe(OH)3) and Platinum

Answer 2

Explanation:

i) Lyophilic Colloids: These are the colloidal solutions in which dispersed particles have strong affinity for dispersion medium. These sols are stable and reversible. Some examples are starch, gum, gelatin sol etc...

ii) Lyophobic Colloids: There the dispersed phase has no affinity for the dispersion medium. These are unstable sols and are irreversible. Some examples are metal in water, ferrie hydroxide sol etc.