Difficult
What are micelles? Give an example of a micellar system.
(N/A) Micelles are spherical aggregates formed by surfactant molecules (like soaps and detergents) in a solvent when their concentration exceeds the Critical Micelle Concentration $(CMC)$.
These molecules possess a dual nature: a long hydrophobic hydrocarbon tail and a hydrophilic polar head.
In water,they arrange themselves into spherical structures where the hydrophobic tails are directed towards the centre (away from water) and the hydrophilic heads are directed towards the outside (towards water).
Example: Sodium stearate $(C_{17}H_{35}COO^{-}Na^{+})$ in water.
These molecules possess a dual nature: a long hydrophobic hydrocarbon tail and a hydrophilic polar head.
In water,they arrange themselves into spherical structures where the hydrophobic tails are directed towards the centre (away from water) and the hydrophilic heads are directed towards the outside (towards water).
Example: Sodium stearate $(C_{17}H_{35}COO^{-}Na^{+})$ in water.
Explore More
Similar Questions
The dispersed phase and dispersion medium of fog respectively are
Consider the following statements about the Tyndall effect:
$(I)$ It is used to distinguish between a true solution and a colloidal solution.
$(II)$ It is possible only when the refractive indices of the dispersed phase and the dispersion medium differ significantly.
$(III)$ It is observed only when the size of the colloidal particles is much smaller than the wavelength of the light used.
Which of the following statements are correct?
$(I)$ It is used to distinguish between a true solution and a colloidal solution.
$(II)$ It is possible only when the refractive indices of the dispersed phase and the dispersion medium differ significantly.
$(III)$ It is observed only when the size of the colloidal particles is much smaller than the wavelength of the light used.
Which of the following statements are correct?
Match column $I$ (process) with column $II$ (application).
Column $I$ Column $II$ $A$. Dialysis $a$. Cleansing action of soap $B$. Peptization $b$. Coagulation $C$. Emulsification $c$. Colloidal solution preparation $D$. Electrophoresis $d$. Purification of colloidal solution
| Column $I$ | Column $II$ |
|---|---|
| $A$. Dialysis | $a$. Cleansing action of soap |
| $B$. Peptization | $b$. Coagulation |
| $C$. Emulsification | $c$. Colloidal solution preparation |
| $D$. Electrophoresis | $d$. Purification of colloidal solution |
The electrolyte having maximum flocculation value for $AgI/Ag^{+}$ sol is:
Tyndall effect is observed due to
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo