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which of the following forms cationic mi...

which of the following forms cationic micelles above certain concentration?

A

Sodium ethyl sulphate

B

Sodium acetate

C

Urea

D

Cetyl trimethyl ammonium bromide

Text Solution

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The correct Answer is:
D
Cetyltrimethylammonium bromide forms cationic micelles above a certain concentration. In the molecule of detergents and soap, the negative ions aggregate to form a micelle of colloidal size. In polar medium (like water), the negative ion has a long hydrocarbon chain and a polar group `(-COO^(-))` at one end and on other end, it has `N^(+)` ion, thus cationic micelle is formed.
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There are certain substances which behave as normal, strong electrolyte at low concentration but at higher concentration they behave as colloidal solutions due to the formation of aggeregated particles. Such colloidals called associated colloids and the aggeregated particles are called micelles. The formation of micelles take place above certain concentration called critical micelization concentration called critical micellization concentration (CMC) and a characteristic temperature. Micelles are formed only

There are certain substances which behave as normal, strong electrolyte at low concentration but at higher concentration they behave as colloidal solutions due to the formation of aggeregated particles. Such colloidals called associated colloids and the aggeregated particles are called micelles. The formation of micelles take place above certain concentration called critical micelization concentration called critical micellization concentration (CMC) and a characteristic temperature. What type of molecules form micelles?

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