Answer :

(i) Sorption


• Sorption is defined as the process by which one substance becomes attached to the surface of another substance. Specific cases of sorption are adsorption, absorption and ion-exchange.


• The reverse of sorption is called desorption.


(ii) Lyophilic colloids


• Based on the nature of interaction between the dispersed phase and dispersion medium colloids are classified as lyophilic and lyophobic colloids. Lyophilic means ‘liquid loving’.


• Colloids that are formed by the mixing of substances like gum, gelatine, rubber etc. with a suitable liquid are called lyophilic sols. These on separation can be reconstituted by mere mixing with the dispersion medium.


• Thus, they are also called reversible sols.


(iii) Associated colloids


• Based on the type of particles present in the dispersed phase, colloids are classified as multimolecular, macromolecular and associated colloids.


• Associated colloids are defined as those substances which behave as strong electrolytes at low concentration and have colloidal behaviour at high concentration due to formation of aggregates, also called micelles.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

<span lang="EN-USChemistry - Board Papers

Assertion : <spanChemistry - Exemplar

Assertion : <spanChemistry - Exemplar

Assertion : ColloChemistry - Exemplar

<span lang="EN-USChemistry - Exemplar