Question

Define the lyophobic and lyophilic colloids with example

Answer 1

this is hydrophobic and hydrophillic polar molecule that repel water is hydrophobic and nonpolar molecules that love water is hydrophilic as lyophillic colloids are liquid loving colloids and lyophobic are hating liquid colloids example of lyophobic are arsenic and iron while examples are lyophillic are starch and proteins.

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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