Chemistry
Give four examples of each of the above types of solutions i.e. true solution, colloidal solution & suspension. Give a reason why a true solution does not exhibit 'Tyndall effect'.
Water
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Answer
Examples of true solution
| Solute | Solvent |
|---|---|
| Potassium Chloride | Water |
| Sugar | Water |
| Lead nitrate | Water |
| Sodium carbonate | Water |
Examples of colloidal solution
| Example | Dispersed phase | Dispersion medium |
|---|---|---|
| Liquid aerosol - fog, hairspray | Liquid [water] | Gas [air] |
| Solid aerosol - smoke | Solid [carbon] | Gas [air] |
| Emulsion - paint | Liquid [oil] | Liquid [water] |
| Gel - gelly | Liquid | Solid |
Examples of suspension
| Solid particles | Dispersion medium |
|---|---|
| Sand | Water |
| Red blood corpuscles | Plasma |
| Mud | Water |
| Chalk | Water |
In a true solution, the particles are neither visible to the naked eye nor under an ultra microscope. Hence, they cannot reflect light and cannot show 'Tyndall effect'.
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