Which of the following can disperse benzene in water

Options

A.
B.
C.
D.

Answer

D

Explanation

Only surfactants (meaning "surface - active agents) or wetting agents have the ability to desperse benzene in water. They both polar (hydrophilic) and nonpolar (hydrophobic) parts. The compound in option (4) is the sodium salt of a long - chain fatty acid. It has a Polar carboxylate head`-overset(O)overset(||)(C)-O^(-)`, and long nonpolar tail, `CH_(3) (CH_(2))_(9)`
The head is compatible with ("soluble in ") water, whereas the hydrocarbon tail is compatible with ("soluble in") benzene.