Question

during adsorption what is positive​

Answer 1

Explanation:

(i) Positive adsorption: If the concentration of adsorbate is more on the surface as compared to its concentration in the bulk phase then it is called positive adsorption. Example: When a concentrated solution of KCl is shaken with blood charcoal, it shows positive adsorption.

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Answer 2

In case of adsorption by solids from the solutions, mostly the solute is adsorbed on the surface of the solid adsorbent so that the concentration of solute on the surface of the adsorbent is greater than in the bulk. This is known as positive adsorption