Question

Simple acid anhydride is the functional derivative of:

• A. alcohol
• B. phenol
• C. carboxylic acid
• D. none of these

Answer 1

Answer: (C)

carboxylic acid

Simple acid anhydride ( $(R-\underset{\underset{O}{||}}{C}{)}_2-O$) is the functional derivative of carboxylic acid ($R-\underset{\underset{O}{||}}{C}-OH$). Thus, acetic anhydride ( $(C{H}_3-\underset{\underset{O}{||}}{C}{)}_2-O$) is functional derivative of acetic acid ($C{H}_3-\underset{\underset{O}{||}}{C}-OH$).