Answer: Lyophobic colloids have weak interaction with the dispersion medium and need stabilizers.
- A Lyophobic colloids have stronger affinity for the dispersion medium as frequently observed in practice
- B Lyophobic colloids have weak interaction with the dispersion medium and need stabilizers
- C Lyophobic colloids are usually larger in particle size in many documented cases according to conventional understanding
- D Lyophilic colloids cannot be redispersed once precipitated in routine practice overall
Correct answer: B. Lyophobic colloids have weak interaction with the dispersion medium and need stabilizers
Explanation: Lyophobic colloids have little affinity for the solvent, making them inherently unstable and often requiring stabilizing agents to prevent coagulation.
A typical adsorption isotherm: x/m (mass adsorbed per gram of adsorbent) rises steeply at low pressure, then flattens into a saturation plateau as the adsorbent surface fills up.
Concept context
Explore the chemistry that happens at interfaces, from catalysts that speed up industrial reactions to colloids like milk, smoke, and gels that surround us every day.