Question

When soap or detergent dissolves in water, which of the following is true?

• A. The polar water soluble ( hydrophilic) head is on the surface of the micelle whereas non polar oil soluble (hydrophobic) tail is in the center of the micelle.
• B. The polar water soluble ( hydrophilic) head is in the center of the micelle whereas non polar oil soluble (hydrophobic) tail is on the surface of the micelle.
• C. The polar water soluble ( hydrophilic) head is in the center of the micelle.
• D. Non polar oil soluble (hydrophobic) tail is on the surface of the micelle.

Answer 1

The correct option is A The polar water soluble ( hydrophilic) head is on the surface of the micelle whereas non polar oil soluble (hydrophobic) tail is in the center of the micelle.

The polar water-soluble ( hydrophilic) head is on the surface of the micelle whereas non-polar oil soluble (hydrophobic) tail is in the centre of the micelle. In the centre of a micelle, small oil droplets are present in which hydrophobic part of micelle dissolves. This results in the formation of oil in water type emulsion.