Question

Peptization is a process of :

• A. precipitating colloidal particles.
• B. purifying colloidal particles.
• C. dispersing the precipitate into colloidal state.
• D. none of the above.

Answer 1

The correct option is C dispersing the precipitate into colloidal state.

Peptization is a process of passing of a precipitate into colloidal particles on adding suitable electrolyte. The electrolyte added is known as peptizing agent.

For example: A reddish brown colored colloidal solution is obtained by adding small quantity of ferric chloride solution to the freshly precipitated ferric hydroxide.