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.
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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.
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C
The polar water soluble ( hydrophilic) head is in the center of the micelle.
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D
Non polar oil soluble (hydrophobic) tail is on the surface of the micelle.
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Solution
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.