ok. yes, all three have a dipole moment. benzoic acid's is the smallest as it has only one OH group to H-bond with. Succinic acid has 2 OH groups to H-bond with, and the sodium benzoate can form ionic bonds, trumping the other two.
I need to determine polarity of 3 compounds in order to intuit the relationship between their distribution coefficients in Ch2Cl2 and H20.
The three compounds are benzoic acid (with a carboxyl group on a benzene ring), succinic acid (a straight chain with 2 terminal carboxyl groups), and...