Question

Which is more polar carboxylic acid or amide or chloride?

Answer 1

arboxylic Acids are the most polar functional group because they can hydrogen bond extensively, they have a dipole moment and 2 electronegative atoms. Notice how large the difference is between esters and carboxylic acids-hydrogen bonding counts for a lot. Obviously the rest of the molecule plays in to any decision.
The N-H bond in amines(-NH2) is less polar than than O-H bond in alcohol. This is due to higher electronegativity of Oxygen in ( -OH) than that of Nitrogen in (-NH2). ... Hence, boiling point of amides is greater than carboxylic acids but Boiling point of amines is lower than that of alcohols.

Answer 2

Cabonxylic acid is most popular.