How do you stabilize Lyophobic colloids?
Table of Contents
- 1 How do you stabilize Lyophobic colloids?
- 2 What are lyophobic colloids with example?
- 3 Why Lyophilic colloids are used to stabilize Lyophobic colloids?
- 4 What is steric stabilization?
- 5 Which is more stable among Lyophilic and lyophobic colloids give one example of each?
- 6 What are Lyophilic and lyophobic colloids give examples?
How do you stabilize Lyophobic colloids?
Lyophobic colloids have no affinity for the dispersing medium and are not solvated. They are stabilized by charge acquired by preferential adsorption of ions. If water is the dispersing medium, they are known as hydrophobic colloids.
What are lyophobic colloids with example?
Difference between Lyophilic and Lyophobic Colloids
| Lyophilic Colloids | Lyophobic Colloids |
|---|---|
| Surface Tension | |
| Generally less than that of the medium | Generally, the same as that of the medium |
| Examples | |
| Starch, protein, gelatin, gum, etc. dissolved in water | Metals, metal sulphides and oxides |
What is the example of Lyophobic?
Example of Lyophilic Sols – Gum sol, starch sol, rubber, gelatin, egg albumin sol etc. Examples of Lyophobic Sols – Ferric hydroxide sol, aluminium hydroxide sol, arsenious sulfide sol etc.
How do you stabilize a colloidal solution?
Polymeric stabilization of colloids There are two types of polymeric stabilization: Steric stabilization of colloids is achieved by polymer molecules attached to the particle surface and forming a coating, which creates a repulsive force and separates the particle from another particle.
Why Lyophilic colloids are used to stabilize Lyophobic colloids?
(i) Lyophilic sols are stabilized due to a layer of solvent around sol particles. (ii) Lyophobic sols are stabilised due to presence of charge. (iii) Addition of lyophilic brings in more stability to lyophobic.
What is steric stabilization?
Steric stabilization is a generic term that embraces all aspects of the stabilization of colloidal particles by nonionic macromolecules. These are studies of incipient flocculation, measurements of the repulsive interactions between stable particles, and stability in polymer melts.
Why are Lyophobic colloids stable?
The stability of a lyophobic colloidal solution is due to the fact that the colloidal particles in the sol are electrically charged. All the dispersed particles in a colloidal solution carry the same charge while the dispersion medium has an equal and opposite charge.
What is Lyophilic colloids and lyophobic colloids?
Hint: Lyophilic colloids are the liquid loving colloids. Lyo means liquid and philic means loving hence, liquid loving. And lyophobic colloids are the liquid hating colloids. Lyo means liquid and phobic means hating, hence liquid hating.
Which is more stable among Lyophilic and lyophobic colloids give one example of each?
Complete answer: Lyophobic sols are more stable because the colloidal particles are more solvated.
What are Lyophilic and lyophobic colloids give examples?
Examples are: Sol of gum, gelatine, starch etc. are lyophilic sols. On the other hand if dispersed phase tends to repel (i.e., dislike or hatred) dispersion medium, the resultant sol is termed as lyophobic sol. Examples are: Sols of metals, metal hydroxides, metal sulphides etc.
What is responsible for stability of colloids?
The stability for colloidal sols is due to Brownian movement and presence of equal i,e., and similar charges which causes repulsion between then and prevents the coagulation of the sol.
Which of the following are stability factors of colloidal solution?
The two factors responsible for the stability of the lyophilic sols are the charge and solvation of the colloidal particles.