In the soap micelles

Options

A. the ionic end of soap is on the surface of the cluster while the carbon chain is in the interior of the cluster
B. ionic end of soap is in the interior of cluster and the carbon chain is out of the cluster
C. both ionic end and carbon chain in the interior of the cluster
D. both ionic end and carbon chain on the exterior of the cluster

Explanation

**Step-by-Step Solution:**

1. **Understanding Soap Micelles:**
- When soap is added to water, it forms spherical aggregates known as micelles. These micelles are crucial for the cleaning action of soap.

2. **Structure of Micelles:**
- Each micelle consists of two distinct parts:
- **Hydrophobic Tail:** This is the water-hating part, typically a long hydrocarbon chain.
- **Hydrophilic Head:** This is the water-loving part, usually an ionic group such as COO⁻Na⁺.

3. **Arrangement of Micelles in Water:**
- In a soap solution, the hydrophilic (ionic) heads of the soap molecules face outward towards the water because they are soluble in water.
- The hydrophobic (hydrocarbon) tails, on the other hand, face inward, away from the water, forming the core of the micelle.

4. **Behavior of Micelles:**
- The arrangement allows the micelle to trap grease and oil within its hydrophobic core while the hydrophilic heads remain in contact with the water, facilitating the removal of dirt and oils from surfaces.

5. **Conclusion:**
- In summary, the correct description of micelles is that the ionic ends (hydrophilic heads) are on the surface of the cluster, while the carbon chains (hydrophobic tails) are in the interior of the cluster. Therefore, the correct answer to the question is option number 1.

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