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In this Chemistry video in Hindi for Class 10 we explained how soaps and detergents work. We also explained why pathogens like, bacteria, viruses die in soap water.
Soap is sodium or potassium salt of long chain carboxylic acid. Detergents are ammonium or sulfonate salt of long chain carboxylic acid.
Soaps are molecules in which the two ends have differing properties, one is hydrophilic, that is, it interacts with water, while the other end is hydrophobic, that is, it interacts with hydrocarbons. When soap is at the surface of water, the hydrophobic ‘tail’ of soap will not be soluble in water and the soap will align along the surface of water with the ionic end in water and the hydrocarbon ‘tail’ protruding out of water. Inside water, these molecules have a unique orientation that keeps the hydrocarbon portion out of the water. Thus, clusters of molecules in which the hydrophobic tails are in the interior of the cluster and the ionic ends are on the surface of the cluster. This formation is called a micelle. Soap in the form of a micelle is able to clean, since the oily dirt will be collected in the centre of the micelle. The micelles stay in solution as a colloid and will not come together to precipitate because of ion-ion repulsion. Thus, the dirt suspended in the micelles is also easily rinsed away. The soap micelles are large enough to scatter light. Hence a soap solution appears cloudy.
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🔴 Click here to watch the whole playlist on Chapter 4 : 'Carbon and its Compounds' for Class 10 :
• Carbon and its Compoun...
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🔴 Introduction
• Carbon and its Compoun...
🔴 Bonding in Carbon
• Bonding in Carbon || i...
🔴 Allotropes of Carbon
• Allotropes of Carbon |...
🔴 Versatile Nature of Carbon
• Versatile Nature of Ca...
🔴 Nomenclature of Carbon Compounds
• Naming CARBON Compound...
🔴 Isomers
• ISOMERS || in Hindi ...
🔴 Chemical Properties of Carbon Compounds
• Chemical Properties of...
🔴 Ethanol and Ethanoic Acid
• Ethanol and Ethanoic A...