Question

Explain mechanism of cleansing action of soaps

Answer 1

• Most dirt is oily in nature and hydrophobic end attaches itself with dirt and the ionic end is surrounded with molecule of water.  This result in formation of a radial structure called micelles.  Soap micelles helps to dissolve dirt and freeze in water and cloth gets cleaned.  The magnesium and calcium salt present in hard water react with soap molecules to form insoluble product called scum.  This scum create a difficult in clensing action.  By use of detergent, insoluble scum is not formed with hard water and cloths get cleaned efficiently.

Answer 2

QUESTION = Explain mechanism of cleansing action of soaps?

ANSWER:-

● SOAPS AND DETERGENT ●

◆ Soaps are Sodium (Na) and Potassium (K) salts of carboxylic acids with long chain.

◆ Soaps are effective with soft water only and ineffective with hard water.

◆ Detergent are ammonium and sulphonate salts carboxylic acids with long chain. They are effective with both soft water as well as hard water.


● CLEANING ACTION OF SOAPS ●

◆ Most dirt and oily in nature and the hydrophobic end of attached itself with dirt, while the ionic end is surrounded with water molecules of water. This result in formation of a radical structure called micelles.

◆ An emulsion is thus formed by water molecules. The clothes need to be mechanically agitated to remove the dirt particles from the clothes.

◆ SCUM - The Magnesium (Mg) and Calcium (Ca) salts present in hard water reacts with soaps molecules to from insoluble product is called scum, thus obstructing the cleaning action. Use of detergents overcome this problem as the detergent molecules prevent the formation of insoluble product and thus Clothes get cleaned.


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