Grease (or oil) can be removed from the surface of clothes by washing with soap water. Which one of the following is true in the context of the above statement?

Options

A. The polar-ionic heads of the soap molecules dissolve in grease.
B. The nonpolar tails of the soap molecules are hydrophilic and so these molecules are easily dissolve in water.
C. The nonpolar tails of the soap molecules dissolve in grease.
D. The polar-ionic heads of the saop molecules are hydrophobic and thus these molecules are easily dissolved in grease.

Answer

C

Explanation

When soap is added to water, the non-polar tails of soap molecules dissolve in grease because they are hydrophobic.