Question

Compare lyophilic and lyophobic sols in terms of stability and reversibility.

Answer 1

Property	Lyophilic sol	Lyophobic sol
Stability	Lyophilic sols are highly stable due to strong solvation (hydration) of particles.	Lyophobic sols are less stable and are easily precipitated by small amounts of electrolytes.
Reversibility	Lyophilic sols are reversible in nature. The sol can be reformed by simply adding the dispersion medium.	Lyophobic sols are irreversible. Once precipitated, they cannot be reformed easily.