Question

What happens if a colloidal solution of sulphur is centrifuged for sometime?

Answer 1

1. Centrifugation: The process of separating the suspended particles of a substance from a liquid in a mixture by churning them at high speed.
2. With this method, fine particles suspended in a liquid are placed in a centrifuge tube and rotated rapidly at high speed in a centrifuge machine.
3. The rapid rotation of the machine creates a force that acts upon the suspended heavier particles and causes them to sink to the bottom of the test tube.
4. The clear liquid, being lighter, remains on top of the test tube.
5. After centrifugation, the two layers can be separated by decantation at high speed is called centrifugation.
6. In the case of a colloidal solution of sulphur, the precipitates of sulphur will settle at the bottom of the tube and the solution collected above the precipitates will be colourless.