Question
i. What is purification of colloidal solution?
ii. How can a colloidal solution be purified using the method of dialysis?
ii. How can a colloidal solution be purified using the method of dialysis?
✓
Answer
i. The process used for reducing the amount of impurities to a requisite minimum is known as purification of colloidal solution.
ii. a. Dialysis is a process of removing a dissolved substance from a colloidal solution by diffusion through a suitable membrane.
b. Purification of colloidal solution can be carried out using dialysis by the following method.
ii. a. Dialysis is a process of removing a dissolved substance from a colloidal solution by diffusion through a suitable membrane.b. Purification of colloidal solution can be carried out using dialysis by the following method.
- The apparatus used is dialyser.
- A bag of suitable membrane containing the colloidal solution is suspended in a vessel through which fresh water is continuously flowing.
- The molecules and ions diffuse through membrane into the outer water and pure colloidal solution is left behind.
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