Question

When we put resins in water why do they swell

Answer 1

Hey mate....

Here's your answer....

The water concentration being less on the inside of the resin, and more on the outside (water source), makes the water flow from the outside to inside, causing the resins to swell up.

Hope this will be helpful to you mate.....

Answer 2

This happens due to a process called “Endosmosis”. It is a form of osmosis where a cell swells in a hypotonic solution on gaining water.

When raisins are put in water, due to osmosis, the water moves from a higher concentration [Outside the raisin] to lower concentration [Inside the raisin].

As a result, the raisin swells and the net moveme of water is inside the cells.