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Soap removes grease by...

Soap removes grease by 

A

adsorption

B

emulsification

C

coagulation

D

none of these

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Problem:** - The question asks how soap removes grease. It provides four options: adsorption, emulsification, coagulation, and none of these. 2. **Identifying the Nature of Grease:** - Grease is primarily composed of oils, which are non-polar substances. Non-polar substances do not mix well with water, which is a polar substance. 3. **Role of Soap:** - Soap is an amphiphilic molecule, meaning it has both a hydrophilic (water-attracting) and a hydrophobic (water-repelling) part. This characteristic allows soap to interact with both water and grease. 4. **Emulsification Process:** - When soap is added to a mixture of water and grease, the hydrophobic tails of the soap molecules attach to the grease (oil), while the hydrophilic heads remain in the water. - This interaction allows the soap to break up the grease into smaller droplets, effectively dispersing it in the water. This process is known as emulsification. 5. **Formation of Micelles:** - As soap molecules surround the grease, they form structures called micelles. In a micelle, the grease is trapped in the center, while the hydrophilic heads of the soap molecules face outward, interacting with water. - This allows the grease to be rinsed away with water. 6. **Conclusion:** - Based on the explanation, the correct answer to the question is that soap removes grease by **emulsification**. **Final Answer:** - Soap removes grease by **emulsification** (Option 2). ---
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