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Assertion (A): Micelles are formed by su...

Assertion (A): Micelles are formed by surfactant molecules above the critical micellization concentration `(CMC)` .
Reason(R): The conductivity of a solution having surfactant molecules decreases sharply at the `CMC` .
(a)If both (A) and (R) are correct, and (R) is the correct explanation of (A).
(b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
(c)If (A) is incorrect, but (R) is correct.
(d)If both (A) and (R) are incorrect.

A

Statement-1 is True, Statement-2 is True and Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True, Statement-2 is True and Statement-2 is NOT a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False

D

Statement-1 is False, Statement-2 is True

Text Solution

Verified by Experts

Both statements are independently correct but Statement II does not explain Statement I. Critical micelle concentration is the minimum concentration of surfactant at which micelle formation commences first. At critical micelle concentration, several molecules of surfactant coalesce together to form one single micelle molecule. This decreases the apparent number of molecule suddenly lowering conductivity sharply.
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