Question

Give a simple activity/experiment to show that the rate of diffusion increases with rising temperature.

Answer 1

Diffusion: - It is the net movement of the molecules of the substance from the higher concentration region to a lower concentration region or can be defined as the intermixing of particles of two substances on their own.

Aim: To demonstrate that the rate diffusion increase with rising in temperature.

Procedure:

1. Take two beakers. Put hot water in one beaker (Label A) and cold water in another beaker (Label B).
2. Drop a crystal of copper sulfate into a beaker of hat water (beaker A) and a beaker of cold water (beaker B).
3. Then record the observations.

Observation:

The crystals start dissolving in beaker A, faster than that in beaker B.

Conclusion:

1. The observation suggests that the rate of diffusion increases with an increase in temperature.
2. This is because particles at higher temperatures have higher kinetic energy.
3. Thus, they move faster to intermix or diffuse quickly.