Question

what are lyophilic and lyophobic colloids explain with one example of each

Answer 1

Answer: On the basis of attraction between dispersed phase and dispersion medium colloids may be classified into lyophillic sol and lyophobic sol. ... Examples are: Sol of gum, gelatine, starch etc. are lyophilic sols.

Answer 2

Lyophilic colloids: Liquid loving colloids which creates a sol are called as lyophilic sol.  

Properites:                        

• High affinity.
• Stable
• No stabilizing agent
• Reversible

Eg: Sols of gum, gelatine, starch, proteins and certain polymers in organic solvents

Lyophobic Colloids: Liquid hating colloids which creates a sol are called as lyophobic sol.  

Properties:

• Zero affinity.
• Unstable.
• Stabilizing agent required.
• Irreversible.

Eg: Sols of metals and their insoluble compounds like sulphides and oxides

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