Question

What is the difference between Dispersed phase and Dispersion medium?

Answer 1

Hint : A dispersion is a system in which particles of one phase are distributed throughout another phase's medium. A dispersion is thus a two-phased system. A dispersion medium and a dispersed phase make up the system. A continuous media in which the dispersed phase is spread throughout is referred to as a dispersion medium. The dispersed phase is made up of particles that have been disseminated via another phase. The primary distinction between scattered phase and dispersed medium is that the former is a discontinuous phase, while the latter is a continuous phase.

Complete Step By Step Answer:
Dispersed Phase-
One of the two phases of a colloid is the dispersed phase. The scattered phase is a discontinuous phase that occurs all across the dispersion medium. The dispersed phase is made up of particles with sizes ranging from 1 to 100 nanometers. In the dispersed phase, there are three sorts of particles. According to these particles, the colloids can be categorised into three groups as
1. Multimolecular colloids
2. Macromolecular colloids
3. Associated colloids (micelle)
Low molecular weight particles constitute the dispersed phase of multimolecular colloids, which can mix to create massive particles with colloidal dimensions. An excellent example is a sulphur solution. In this case, one colloidal particle has a huge number of S8 units. The heavy molecular weight particles of the individual colloidal particles make up the dispersed phase of macromolecular colloids. An excellent example is a starch solution. Glucose molecules are floating in water in this image. The dispersed phase of associated colloids consists of particles produced by the aggregation of smaller particles. Associated colloids include things like soap and synthetic detergents.
Dispersion medium-
A colloid's continuous phase is known as the dispersion medium. It is the distribution phase of the scattered phase. It may exist in every state of matter, including solid, liquid, and gaseous states. Because the dispersed phase resides inside the dispersion medium, it is also known as the exterior phase. Consider the following instances. A colloidal dispersion is milk. It is made up of oil droplets suspended in water. As a result, the dispersion medium is water. Water droplets are distributed throughout the air in fog. As a result, air serves as the dispersion medium. Air bubbles are distributed throughout the foam substance of a solid foam sponge. The foam substance serves as the dispersion medium in this case.
Difference-

Dispersed phase	Dispersion Medium
One of the two phases of a colloid is the dispersed phase.	The continuous phase of a colloid is known as the dispersion medium.
Discontinuous	Continuous
Internal phase	External phase
Dust particles in air- Example	Water in milk - Example

Note :
The study of physical and chemical processes that occur at the interface of two phases, such as solid–liquid interfaces, solid–gas interfaces, solid–vacuum interfaces, and liquid–gas interfaces, is known as surface science. Surface chemistry and surface physics are included in this subject. Surface engineering refers to a group of related practical applications. Heterogeneous catalysis, semiconductor device manufacturing, fuel cells, self-assembled monolayers, and adhesives are all part of the science. Interface and colloid science are closely connected to surface science.