Question

Explain the terms with suitable examples:
(1) Alcosol, (2) Aerosol, (3) Hydrosol

Answer 1

Hint: .Alcosol, aerosol and hydrosol are the colloidal solutions that are having the dispersion medium and dispersed phase. These differ from each other due to the different dispersion medium and dispersed phase in them.

Complete answer:
(i) Firstly, let’s see about alcosol:
- It is a colloidal solution which has a dispersion medium as alcohol and dispersion phase a solid substance.
- Dispersed phase is the phase that is scattered or present in the form of colloidal particles in the dispersed medium.
 - Dispersed medium is the medium in which the colloidal particles are dispersed is called the dispersion medium.
- Example: We can see that in a starch solution, water represents the dispersion medium and starch represents the dispersed phase.
- It is used as a disinfectant.

(ii) Now let’s discuss about aerosol:
 - It is a colloidal solution having gas as dispersion medium and solid as a dispersion phase
 - Example of aerosol is: Fog
An aerosol is a suspension system of solid or liquid particles in a gas. It is found that an aerosol contains both the particles as well as air.

(iii) Hydrosol:
- Hydrosol is a colloidal solution which has a dispersion medium as water and dispersion phase a solid.
- For example: Starch sol or gold sol is hydrosol.
- It is found that hydrosol has similar healing properties as essential oils, but they are much less concentrated than essential oils and can be used internally and externally.

Additional Information: -There are some applications found in aerosols like it is used for calibrating instruments, and testing sampling equipment, also it is widely used for medical treatment of respiratory disease .
- Colloids can be classified on the basis of the types of particles in the dispersed phase into following types:, multimolecular colloids, macromolecular colloids, associated colloids.

Note: - We have already discussed various colloidal solutions. One should not get confused in terms between dispersion phase and Dispersion medium.
-It is also important to note that Dispersed phase is one of the two phases in a colloid. A dispersion medium is the continuous phase of a colloid.