Here’s a explanation:
Dialysis in Colloid Chemistry
- Definition: Dialysis is the process of removing small dissolved impurities (like salts) from a colloidal solution using a semi-permeable membrane.
- How it works:
- Colloid is placed in a bag made of a membrane.
- Small molecules and ions pass through the membrane into the surrounding water.
- Colloidal particles are too big to pass, so they stay inside.
Example:
- Purifying protein sol or gelatin sol to remove excess salts.
Simple tip:
- Dialysis → small impurities out, colloid stays in