Question

The formation of micelles takes place only above:

• A. critical temperature
• B. kraft temperature
• C. inversion temperature
• D. absolute temperature

Answer 1

Answer: (B)

kraft temperature

• Associated colloids are substances which at low concentrations behave as normal strong electrolytes, but at higher concentrations exhibit colloidal behaviour due to the formation of aggregates.
  
• The aggregated particles thus formed are called micelles.
  

• The formation of micelles takes place only above a particular temperature called Kraft temperature $\left(T_k\right)$ and above a particular concentration called critical micelle concentration $\left(CMC\right)$.