Question

Select the correct statement about CMC (Critical Miscelle Concentration):

• A. CMC increases with the total surfactant concentration
• B. When a sol has a concentration higher than CMC, lamellar micelles that have extended parallel sheets are formed
• C. As temperature increases, CMC initially decreases then increases slightly
• D. All the above are correct

Answer 1

The correct option is D All the above are correct

Correct answer is option (d).
As surfactant concentration increases, CMC also increases. If a sol has a concentration higher than the CMC, extended parallel sheets are formed. These are called lamellar micelles.
As temperature increases, CMC initially decreases then increases slightly.