Question

Write short on Adsorption indicators.

Answer 1

A type of indicator used in reactions that involve precipitation. ... At the end point, no Cl−ions are left in solution and negative fluorescein ions are then adsorbed, giving a pink colour to the precipitate. The technique is sometimes known as Fajan's method.

Answer 2

Answer:

Characteristics of adsorption :

(1) It involves intermolecular forces.

(2) Weak van dar Waals forces give rise to physical adsorption

(3) Strong chemical bonding forces give rise to chemical forces.

(4) Adsorption is exothermic.

(5) In case of physisorption, adsorption decreases with the increase in temperature while in chemisorption it increases.

(6) It is applicable in many industrial processes.