Among the following, the surfactant that will form micellesin aqueous solution at the lowest molar concentration atambient condition is : – (2008S)
  • a)
    CH3 (CH2 )15N+ (CH3)3Br-
  • b)
    CH3 (CH2 )11OSO3-Na+
  • c)
    CH3 (CH2 )6COO-Na+
  • d)
    CH3 (CH2 )11N+ (CH3)3Br-
Correct answer is option 'B'. Can you explain this answer?

JEE Question

By Pooja Garg · Jan 10, 2020 ·JEE
2 Answers
Kumari Muskan answered Jan 10, 2020
Correct answer is A not B as A has the longest chain. As size of hydrocarbon chain increases then critical concentration of micelle formation decreases. In this case solubility reduces and tendency of surfactant molecules to associate increases. So,A will be correct answer

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