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(a) Mention two factors which affect ads...

 (a) Mention two factors which affect adsorption of a gas on a solid.
(b) Is synthesis of ammonia by Haber's process, a homogeneous or heterogeneous catalysis?
(c) State Hardy-Schulze rule. Among `Al_(2) (SO_(4))_(3) and (NH_(4))_(3) PO_(4)` which is better coagulating agent for a negative sol?

Text Solution

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(a) (1) Surface area of adsorbent     (2) Nature of adsorbent (or) adsorbate
(b) Heterogenous catalysis
(c) Greater the valency of the active ion, greater is its power to cause precipitation `Al_(2)(SO_(4))`
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