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Explain (a) diffusion in solids (b) diffusion in liquid (c) diffusion in gas

By BYJU'S Exam Prep

Updated on: September 25th, 2023

(a) Diffusion is the movement of particles of different substances from the region of their high concentration to the region of their lower concentration.

(b) Diffusion in gases is very fast because the density of the gas is very less as compared to solid and liquid states.

(c) Diffusion in solids is a very slow process because the density of solids is very high as compared to liquids and gases.

Diffusion

  • The movement of particles made up of various substances from an area where they are highly concentrated to an area where they are less concentrated is known as diffusion.
  • Up until a homogenous mixture is produced, different substances diffuse into one another. Consider the airborne spread of bromine fumes.
  • The density of the material has an inverse relationship with the rate of diffusion.

Diffusion in Gases:

  • Because a gas has a much lower density than a solid or a liquid, diffusion in a gas occurs very quickly.
  • As an illustration, when we light an incense stick (agarbatti) in one corner of our room, the fragrance quickly fills the entire space as the smoke diffuses into the air.

Diffusion in liquids:

  • Because liquids have a larger density than gases but a lower density than solids, their diffusion is slower than that of gases.
  • Example: The diffusion of potassium permanganate particles into water is what causes the purple color of potassium permanganate to spread throughout the water on its own.

Diffusion in solids:

  • Solids can also undergo diffusion. Because solids have a far higher density than liquids and gases, diffusion in them happens very slowly.
  • Example: If we write something on a blackboard and then neglect to clean it for a long time, we will discover that cleaning the chalkboard becomes rather challenging. This occurs as a result of some of the chalk’s particles diffusing into the board’s surface.

Summary:

Explain (a) diffusion in solids (b) diffusion in liquid (c) diffusion in gas

(A) Diffusion is the movement of particles made up of various substances from an area where they are concentrated in high amounts to a place where they are concentrated in low amounts.

(b) Because a gas has a much lower density than a solid or liquid, diffusion in a gas occurs very quickly.

(c) Solids have a far higher density than liquids and gases, making diffusion in them a very slow process.

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