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At the critical micelle concentration, t...

At the critical micelle concentration, the surfactant molecules :

A

dissociate

B

associate

C

become bigger in size due to adsorption

D

become smaller in size due to decomposition.

Text Solution

Verified by Experts

The correct Answer is:
B
At CMC, the particles of an electrolyte aggregate and form associated colloids known as micelles.
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At CMC, the surfactant molecules :

CMC (Critical Micelle Concentration) is

Below critical micelle concentration (CMC):

Above critical micelle concentration, particles get :

NCERT FINGERTIPS-SURFACE CHEMISTRY-Colloids And Classification Of Colloids
  1. The formation of micelles takes place only above

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  2. CMC (Critical Micelle Concentration) is

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  3. At the critical micelle concentration, the surfactant molecules :

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  4. In the given figure label the parts

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  5. Soap mixed with water below critical micelle concentration behaves as

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  6. White of an egg whipped with water acts as

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  7. Colloidal solutions of metals like gold can be prepared when their sal...

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  8. When a small quantity of FeCl(3) solution is added to the fresh precip...

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  9. Which of the processes is being shown in the figure ?

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  10. Which of the following is not a method of removing impurities from a c...

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  11. Tyndall effect is observed only when (i) the diameter of the dispers...

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  12. When a colloidal solution is viewed from the direction at right angles...

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  13. Tyndall effect is not observed in

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  14. Which of the following systems will show Tyndall effect ?

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  15. Why is ferric hydroxide colloid positively charged when prepared by ad...

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  16. When an excess of a very dilute aqueous solution of KI is addd to a ve...

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  17. The ratio of the number of moles of AgNO(3), Pb(NO(3))(2) and Fe(NO(3)...

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  18. The combination of two layers of opposite charges aroung the colloidal...

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  19. Which of the following is not an explanation for the origin of charge ...

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  20. Movement of dispersion medium under the influence of electric field is...

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