Lyophobic Colloids | Lyophilic Colloids 1 -Lyophilic colloids very stable and are not easily coagulated by electrolytes. |
I. These are generally unstable, get | |
easily coagulated on adding electrolytes. | |
2. These sols are irreversible in nature. | 2. These sols are reversible in nature. |
3. Prepared by indirect methods. |
|
4.Viscosity of colloidal dispersion is same as that of the solvent. | |
4. These are highly viscous systems. | |
5. These are generally inorganicmaterials i.e. metals, sulphide and | 5. Mostly organic materials e.g., starch, proteins, gums etc. |
oxide sols. | 6. Particles may have little or no charge |
6. Particles carry liositive or negative charge and stability depends on | at all. |
Zeta potential. | 7. Surface tension is lower than that of |
7. Surface tension is similar to that of | the dispersion medium. |
the dispersion medium. | 8. The particles present cannot he easily• |
8. The particles present can easily be | detected in the ultra microscope. |
detected in the ultra microscope. | 9. Examples; gum or starch in water. |
9. Examples; Sulphur inwater. |
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