Question

Which compound has the highest boiling point ?

Answer 1

Answer
The correct answer is A.
Explanation :
Propionamide
he $N{H}_2$ group can form two hydrogen bonds, and the O atom has two lone pairs available to form two more hydrogen bonds.
Thus, one molecule of propionamide can form a hydrogen bond to four other molecules,
N-methylacetamide
The NH group can form one hydrogen bond, and the O atom has two lone pairs available to form two more hydrogen bonds.
Thus, one molecule of N-methylacetamide can form hydrogen bonds to three other molecules,
Neither compound has hydrogen bonding. The strongest intermolecular forces are dipole-dipole interactions.
Propionamide has the strongest intermolecular forces,