what are the properties of colloidal solution? minimum 5
properties. plz
Answers
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There are 4 types of properties of colloidal solution.
PHYSICAL PROPERTIES
- The nature of the colloidal solution is heterogeneous i.e. unlike. These solutions dwell with two different phases:
• Dispersed Phase
• Dispersed Medium
- The color of the colloidal dispersion is determined by particles in the solution based on their size. The wavelengths of light that is absorbed will be longer if the size of the particle is large.
- As a result of its size, the colloidal fragments can easily be passed through a traditional filter paper. However, these particles can be filtered by using membranes such as animal, cellophane, and ultrafilters.
ELECTRICAL PROPERTIES
- Electrical double layer theory
In this theory, charge is imparted to the particles by placing ions which are adsorbed preferentially at immovable points which for the first layer. The second layer consists of diffused mobile ions. The charge present on both the layers is equal. This two-layer arrangement leads to a development of potential called zeta or Electrokinetic potential.
- Electrophoresis
It is a process in which an electric field is been applied to a colloidal solution which is responsible for the movement of colloidal particles. Depending upon the accumulation near the electrodes the charge of the particles can be predicted. The charge of the particles is positive if the particles get collected near a negative electrode and vice versa.
- Electro - osmosis
It is a process in which the dispersing medium of the colloidal solution is brought under the influence of electric field and the particles are arrested.
OPTICAL PROPERTIES
- Tyndall effect is defined as the phenomenon in which light is scattered by the colloidal particles. The light is been absorbed by the particles present in the solution. Once the light is been absorbed a part of the light gets scattered in all the directions. The result of scattering exhibits this effect.
KINETIC PROPERTIES
- During the observation of the colloidal dispersion under an ultra-microscope, it is clearly seen that the particles are in a continuous movement in the solution. This random zig-zag movement of the particles in the colloidal solution is called Brownian effect. This movement is mainly due to the unique bombardment of the molecules present in the dispersed medium on the colloidal particles.
COLLOIDAL SOLUTION
- A colloidal solution is a type of a mixture which consists of particles whose size varies between 1 to 1000 nanometers. In colloidal solution the particles are distributed evenly. During this process the particles do not settle down. This is one of the best know thing about colloidal solutions.
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