Among the following, the surfactant that Will form micelles in aqueous solution at the lowest molar concentration at ambinent condition is:

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

${CH}_{3} {({CH}_{2})}_{11} {OSO}_{3}^{-} {Na}^{+}$

${CH}_{3} {({CH}_{2})}_{6} {COO}^{-} {Na}^{+}$

${CH}_{3} {({CH}_{2})}_{15} N^{+} {({CH}_{3})}_{3} {Br}^{-}$

${CH}_{3} {({CH}_{2})}_{11} N^{+} ({CH}_{3}) {Br}^{-}$

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The critical micelle concentration (CMC) in colloidal systems is the level of surfactant concentration above which micelles form and all further surfactants added to the system produce micelles.
Chain length has an impact on CMC. The CMC is smaller the longer the hydrocarbon tail chain is. Among all,

${CH}_{3} {({CH}_{2})}_{15} N^{+} {({CH}_{3})}_{3} {Br}^{-}$ most extensive carbon chain. It therefore has the lowest CMC.