Question

A soap molecule forms micelle. Which of the following is NOT true?

• A. The long non polar end of soap gravitates towards and surrounds the dirt and absorbs the dirt in it
• B. The short polar end with the carboxylate ion turns the water away from the dirt.
• C. The soap molecule helps in dissolving the dirt in water
• D. The end of soap molecule with carboxylate group is oil soluble.

Answer 1

Answer: (D)

The end of soap molecule with carboxylate group is oil soluble.

The head part of soap molecule with carboxylate group is hydrophilic ( water soluble). The tail part is hydrocarbon chain which is oil soluble. Hence, statement of the option (D) is not true.