The correct order of decreasing boiling points of CH3CONH2 (A) CH3COCl (B) CH3COOH (C) and (CH3CO)2O (D) is:
A>D>C>B
The b.p. are CH3CONH2>(CH3CO)2O>CH3COOH>CH3COCl
2220C 1390C 1160C 520C