is adsorption a bulk phenomena? if yes, then how?

  • Adsorptionis a surface phenomenon of accumulation of molecules of a substance at the surface rather than in the bulk of a solid or liquid. In adsorption, the substance gets concentrated at the surface only. It does not penetrate through the surface to the bulk of the solid or liquid. For example, when we dip a chalk stick into an ink solution, only its surface becomes coloured. If we break the chalk stick, it will be found to be white from inside.

  • On the other hand, the process ofabsorptionis a bulk phenomenon. In absorption, the absorbed substance gets uniformly distributed throughout the bulk of the solid or liquid.

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since in adsorptionthe absorbed substance gets uniformly distributed throughout the bulk of the solid or liquid.

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