JEE Main & Advanced Sample Paper JEE Main - Mock Test - 23

  • question_answer
    Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient condition is :-

    A) \[C{{H}_{3}}{{(C{{H}_{2}})}_{15}}{{N}^{+}}{{(C{{H}_{3}})}_{3}}B{{r}^{-}}\]

    B) \[C{{H}_{3}}{{(C{{H}_{2}})}_{11}}OSO_{3}^{-}\,N{{a}^{+}}\]

    C) \[C{{H}_{3}}{{(C{{H}_{2}})}_{6}}CO{{O}^{-}}N{{a}^{+}}\]

    D) \[C{{H}_{3}}{{(C{{H}_{2}})}_{11}}{{N}^{+}}{{(C{{H}_{3}})}_{3}}B{{r}^{-}}\]

    Correct Answer: A

    Solution :

    Greater is the size of hydrophobic chain lesser is solubility in water and greater is the frequency of surfactant molecules to associate to form micelle.

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