Question
Explain cleansing mechanism of soaps and detergents.
✓
Answer
i. Soaps and detergents bring about cleansing of dirty, greasy surfaces by the same mechanism.
ii. Dirt is held at the surface by means of oily matter, and therefore cannot get washed with water.
iii. The molecules of soaps and detergent have two parts. One part is polar called head and the other part is long nonpolar chain of carbons called tail.
iv. The hydrophilic polar head can dissolve in water which is a polar solvent, while the hydrophobic nonpolar tail dissolve in oil/fat/grease.
v. The molecules of soap/detergent are arranged around the oily droplet such that the nonpolar tail points towards the central oily drop while the polar head is directed towards the water.
vi. Thus, micelles of soap/detergent are formed surrounding the oil drops, which are removed in the washing process.
ii. Dirt is held at the surface by means of oily matter, and therefore cannot get washed with water.
iii. The molecules of soaps and detergent have two parts. One part is polar called head and the other part is long nonpolar chain of carbons called tail.
iv. The hydrophilic polar head can dissolve in water which is a polar solvent, while the hydrophobic nonpolar tail dissolve in oil/fat/grease.
v. The molecules of soap/detergent are arranged around the oily droplet such that the nonpolar tail points towards the central oily drop while the polar head is directed towards the water.
vi. Thus, micelles of soap/detergent are formed surrounding the oil drops, which are removed in the washing process.
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