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Sol is a type of colloid in which solid particles are suspended in a liquid, i.e., the solvent is liquid and the solute is solid.
Thus, we can say that in Sol
- Dispersed phase is Solid
- Dispersion medium is Liquid
Examples of Sol
Examples of Sol are
- Paint - Paints have small solid particles in liquid
- Blood - Blood is a liquid which has Red Blood Cells, White Blood Cells suspended in it
- Ink - Ink also has small solid particles in liquid
Properties of Sol
Since it is a colloid, all properties of colloid are applicable to sol.
The properties are
- It is a heterogeneous mixture
- Size of particles is neither too small nor too large (1 - 100nm) but are too small to be seen by the naked eye
- However, particles are large enough to scatter a beam of light; Tyndall Effect
- Particles are stable , they do not settle down when left undisturbed.
