Class 12 Chemistry - Chapter Surface Chemistry NCERT Solutions | Explain the terms with suitable examples

Welcome to the NCERT Solutions for Class 12th Chemistry - Chapter Surface Chemistry. This page offers a step-by-step solution to the specific question from Exercise 2, Question 26: explain the terms with suitable examples i a....
Question 26

Explain the terms with suitable examples:

(i) Alcosol

(ii) Aerosol

(iii) Hydrosol

Answer

(i) Alcosol: A colloidal solution having alcohol as the dispersion medium and a solid substance as the dispersed phase is called an alcosol. For example: colloidal sol of cellulose nitrate in ethyl alcohol is an alcosol.

(ii) Aerosol: A colloidal solution having a collection of solid particles or liquid droplets dispersed in air is called an aerosol. For example: fog, smoke, etc.

(iii) Hydrosol: A colloidal solution having water as the dispersion medium and a solid as the dispersed phase is called a hydrosol. For example: starch sol or gold sol.

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