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Micelles are:...

Micelles are:

A

emulsion cum gel

B

associated colloids

C

adsorbed catalysts

D

ideal solutions

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question "Micelles are:", we need to analyze the options provided and understand the concept of micelles in the context of surface chemistry. ### Step-by-Step Solution: 1. **Understanding Micelles**: - Micelles are aggregates of surfactant molecules that form in solution when the concentration of the surfactant exceeds a certain threshold known as the critical micelle concentration (CMC). 2. **Composition of Micelles**: - Surfactants have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts. In a micelle, the hydrophobic tails of surfactant molecules point inward, away from the water, while the hydrophilic heads face outward, interacting with the water. 3. **Behavior in Solution**: - At low concentrations, surfactants behave like true solutions. However, as the concentration increases and surpasses the CMC, surfactant molecules start to aggregate to form micelles, which are a type of colloidal solution. 4. **Identifying the Correct Option**: - Now, let’s evaluate the options: - **Option 1**: Emulsion cum gel - This does not accurately describe micelles. - **Option 2**: Associated colloids - This is a correct description as micelles are indeed associated colloids formed by the aggregation of surfactant molecules. - **Option 3**: Absorbent catalyst - This is unrelated to the concept of micelles. - **Option 4**: Ideal solutions - This does not apply to micelles, as they are not ideal solutions. 5. **Conclusion**: - Based on the analysis, the correct answer is **Option 2: Associated colloids**. ### Final Answer: Micelles are associated colloids.
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