Sodium stearate CH 3 (CH 2 ) 16 COO – Na + is an anionic surfactant which forms micelles…

Chemistry · JEE Main · NTA Exams — Surface Chemistry

Sodium stearate CH3(CH2)16COO–Na+ is an anionic surfactant which forms micelles in oil. Choose the correct statement for it from the following.
  1. It forms spherical micelles with CH3(CH2)16
    — group pointing outwards on the surface of sphere.
  2. It forms non-spherical micelles with CH3(CH2)16
    —group pointing towards the centre.
  3. It forms non-spherical micelles with —COO– group pointing outwards on the surface.
  4. It forms spherical micelles with CH3(CH2)16
    — group pointing towards the centre of sphere.

Answer

(D) It forms spherical micelles with CH 3 (CH 2 ) 16 — group pointing towards the centre of sphere.

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