Question 39
Alkanoic Acids and EstersWhich of the following is the functional group of carboxylic acids?
- A.—OH
- B.> C = O
- C.> C—OH
- D.—C(=O)OH
- E.—C = N
Show the answer and explanation
Answer: D (—C(=O)OH)
Explanation
Carboxylic acids contain the carboxyl group, –COOH: a carbon joined to both a C=O oxygen and an –OH.