Select the correct statement(s).

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The cleansing action of soap is due to affinity of soap anions as stearate C17H35COO−

Soaps are known as emulsifying agents

C17H35 (R) part of soap has affinity for grease, oil or dirt and is tail of the anion

COO- part of soap has affinity for water and is head of the anion

answer is A.

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Detailed Solution

(1,3,4) When soap or detergent is used as cleansing agent, R part of the anion is hydrophobic and dissolves grease, oil, dust etc. It is called tail of the anion. COO- part of the anion is hydrophilic and remains soluble in water. It is called head of the anion. The tail part dissolves in the grease deposit and thus, micelle is formed which in turn is removed by rinsing with water (2) Main function of the soap is to reduce oily and greasy dirt to colloidal particles (in emulsion). Thus. soaps are called emulsifying agents

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