Question

What is meant by dispersed phase? Give example of dispersion:
i.Liquid in gas
ii.Liquid in solid solution

Answer 1

Hint: A dispersion is a mechanism through which scattered particles of one material are disseminated in a continuous phase of another substance. Suspensions are particle dispersions that are too broad for sedimentation, whereas colloids and solutions are particle dispersions with smaller particles.

Complete answer: A scattered medium is made up of two media that do not merge. It consists of isolated elements from one medium that are distributed throughout a second continuous medium. In essence, both mediums might be extremely different. They could be a gas, a liquid, or a solid, for example.
The dispersed phase is the phase that is distributed or present in colloidal particle shape. The medium of dispersion is the medium in which colloidal particles are disseminated. In a starch solution, for example, the dispersed phase is starch, and the dispersing medium is water.
A liquid in gas dispersion is known as aerosol, when liquid (or solid) is the dispersed phase and gas is the dispersion medium. For example, fog and mist.
A liquid in solid dispersion is known as solid emulsion or gel, when liquid acts as the dispersed phase and solid acts as the dispersion medium. For example, cheese.

Note:
The Tyndall Effect is a simple method for assessing if a combination is colloidal or not. When light is shone through a true solution, it passes through it cleanly; however, when light is shone through a colloidal solution, the substance in the scattered phases scatters the light in all directions, making it visible. A flashlight shining into fog is an example of this. Because the fog is a colloid, the light beam is plainly visible.