Explain diffusion phenomenona based on the states of matter
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Diffusion is the spreading out and intermixing of one substances into another due to movement of particles. It takes place from region of high concentration to the region of low concentration till the uniform distribution is attained.
1) Diffusion occurs in Solids , Liquids and gases.
2) Diffusion in Gases:
Rate of diffusion is higher in gases due to more inter moelcular space and they move with higher Kinetic energy.
Lighter gases diffuse faster than heavier gases.
example: Mixing of two gases.
3) Diffusion in Liquids:
Rate of diffusion in liquids is greater than solids .
example: Mixing of KMnO4 solution in water.
4) Diffusion rate in Solids :
Rate of diffusion in solids is very rarely observed .
5) factors affecting rate of diffusion:
Temperature : As temperature increases rate of diffusion increases.
Density : As density increases rate of diffusion decreases.
1) Diffusion occurs in Solids , Liquids and gases.
2) Diffusion in Gases:
Rate of diffusion is higher in gases due to more inter moelcular space and they move with higher Kinetic energy.
Lighter gases diffuse faster than heavier gases.
example: Mixing of two gases.
3) Diffusion in Liquids:
Rate of diffusion in liquids is greater than solids .
example: Mixing of KMnO4 solution in water.
4) Diffusion rate in Solids :
Rate of diffusion in solids is very rarely observed .
5) factors affecting rate of diffusion:
Temperature : As temperature increases rate of diffusion increases.
Density : As density increases rate of diffusion decreases.
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146
The constituent particles in solids are very closely packed. Hence diffusion occurs rarely in solids as particles in two solids cannot intermix with each other. Solids can diffuse into liquids and gases comparatively easier than into solids. There are examples in which solid can diffuse into solid such as formation of alloys.
The rate of diffusion of liquids is higher than that of solids. This is due to the fact that in the liquid state, particles move freely and have greater space between each other as compared to particles in the solid state.
However, the rate of diffusion is maximum in gases, as spaces between the constituent particles of gases are larger as compared to both liquids and solids.
The rate of diffusion of liquids is higher than that of solids. This is due to the fact that in the liquid state, particles move freely and have greater space between each other as compared to particles in the solid state.
However, the rate of diffusion is maximum in gases, as spaces between the constituent particles of gases are larger as compared to both liquids and solids.
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