Explain the meaning of the statement 'Ad...

Explain the meaning of the statement 'Adsorption is a surface phenomenon'.

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When a solid adsorbent is placed in a closed vessel containing some gas or a solution, the molecules of the gas or the solute are adsorbed on the surface so that their concentration is higher on the surface. Hence, it is called a surface phenomenon.

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Identify the statement which is incorrect w.r.t. surface phenomenon.

A sol, prepared by adding excess `AgNO_(3)` solution in KI solution when subjected to electro-phoresis will show coagulation near

The conductivity of a soap solution decreases steeply at CMC.

Tyndall effect will be more prominent in gold solution as compared to rubber solution.

Extent of physisorption increases with increase in temperature initially and then decreses with temperature.

Which of the following statements are correct? I. Sillica gal adsords water the molecules. , II. Anhy. CaCI_(2) adsorbs the water molecules. , III. Adsorption is a surface phenomenon.

I and II

II and III

I and III

All of these