Chemistry · Colligative properties of dilute solutions: a relative lowering of vapour pressure, depression of freezing point, the elevation of boiling point and osmotic pressure
Which one of the following forms micelles in aqueous solution above certain conc
Which one of the following forms micelles in aqueous solution above certain concentration?
- A. Dodecyl trimethyl ammonium chloride
- B. Glucose
- C. urea
- D. Pyridiniumchloride
Step-by-step solution
Micelles form from amphiphilic molecules (surfactants) with distinct hydrophobic and hydrophilic parts. Dodecyl trimethyl ammonium chloride has a long hydrophobic dodecyl chain and a hydrophilic quaternary ammonium head, making it a cationic surfactant that assembles into micelles above its critical micelle concentration. Glucose, urea, and pyridinium chloride lack such amphiphilic structure and do not form micelles.
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