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5.1 Distinguish between the meaning of term adsorption and absorption. Give one example of each.
Answers (1)
Adsorption- It is a surface phenomenon in which the molecules or substances accumulate at the surface rather than in a bulk of a solid or liquid. The substance that gets adsorbed is called adsorbate and the material on which it is adsorbed is called adsorbent. In adsorption, the adsorbate does not penetrate the adsorbent surface it concentrates only at the surface of the solid and liquid. example-when we dip a chalk stick into the ink solution, only its surface becomes coloured. If we break the chalk stick, it will be found to be white from inside.
Absorption- It is a bulk phenomenon, in this process, the substance uniformly distributed throughout the bulk of the solid or liquid.example-Water vapours are absorbed by anhydrous calcium chloride.
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