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For micelle formation, which of the following statements are correct? a. Micelle formation is an exothermic process. b. Micelle formation is an endothermic process. c. The entropy change is positive d. The entropy change is negative

1. a and d only
2. a and c only
3. b and c only
4. b and d only

Correct answer: a and c only

Solution

Micelle formation is an exothermic process because it releases energy as the hydrophobic tails of surfactants aggregate, and this leads to an increase in entropy due to the more disordered state of the surrounding water molecules.

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