Question:
Potassium stearate is obtained by the saponification of an oil or fat. It has formula CH\(_3\)–(CH\(_2\))\(_{16}\)–COOK. The molecule has a lyophobic terminal CH\(_3\) and a lyophilic terminal –COOK. Potassium stearate is an example of
Potassium stearate is obtained by the saponification of an oil or fat. It has formula CH\(_3\)–(CH\(_2\))\(_{16}\)–COOK. The molecule has a lyophobic terminal CH\(_3\) and a lyophilic terminal –COOK. Potassium stearate is an example of
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Soap + water → micelle formation (cleansing action).
Updated On: Apr 23, 2026
- lyophilic colloid
- lyophobic colloid
- macromolecular colloid
- micelle
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The Correct Option is D
Solution and Explanation
Concept:
Soap molecules form micelles in solution.
Step 1: Molecule has hydrophobic tail (CH$_3$–chain).
Step 2: It also has hydrophilic head (–COOK).
Step 3: Such molecules aggregate to form micelles in water.
Step 4: Micelles trap grease inside hydrophobic core.
Conclusion:
Correct answer = Micelle
Step 1: Molecule has hydrophobic tail (CH$_3$–chain).
Step 2: It also has hydrophilic head (–COOK).
Step 3: Such molecules aggregate to form micelles in water.
Step 4: Micelles trap grease inside hydrophobic core.
Conclusion:
Correct answer = Micelle
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