Question

Which of the following options are correct?

• A. Micelle formation by soap in aqueous solution is possible at all temperatures.
• B. Micelle formation by soap in aqueous solution occurs above a particular concentration.
• C. On dilution of soap solution micelles cannot revert to individual ions.
• D. Soap solution behaves as a normal strong electrolyte at all concentrations.

Answer 1

The correct option is B Micelle formation by soap in aqueous solution occurs above a particular concentration.

The formation of micelles takes place only above a particular temperature called ‘Krafft Temperature’ and only above a particular concentration called ‘Critical micelle concentration’.

On dilution of soap solution micelles revert to individual ions.