Question

near cmc micelles of the surfactant molecules assume the shape of mcq​

Answer 1

Explanation:

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Answer 2

Final answer: Near CMC, micelles of the surfactant molecules assume spherical in shape.    

Given that: We are given the term micelles.

To find: We have to find the shape of micelles of the surfactant molecules near CMC.

Explanation:

• Certain substances, which behave as normal electrolytes in dilute solutions, show colloidal properties at higher concentrations due to the formation of aggregated particle of colloidal size known as micelles. Such colloidal system are called associated colloids.
• Micelle formation occurs only above a certain minimum concentration of the surfactant in a solution is called critical micelle concentration (CMC).

• Surfactants are capable of forming this kind of colloidal dispersion showing lyophilic character. e.g., Soap ($R-COONa$) is considerably ionized in dilute solutions into $RCOO^{-}$ and $Na^{+}$ ions.
• However, at higher concentration, the anions ($RCOO^{-}$) aggregate together to form clusters of colloidal dimensions which may involve a number of water molecules too.
• The structures of these anionic micelles in aqueous medium are approximately spherical.

Hence, near CMC, micelles of the surfactant molecules assume spherical in shape.

To know more about the concept please go through the links

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