Question

When propionic acid is treated with aqueous $NaHCO_3$ , $CO_2$ is liberated. The $'C'$ of $CO_2$ comes from

• A. methyl group
• B. carboxylic acid group
• C. methylene group
• D. bicarbonate

Answer 1

Answer: (C)

methylene group

Answer 2

During the reaction of carboxylic acids with $NaHCO_3$, the $CO_2$ evolves comes from $NaHCO_3$ and not from carboxylic acids.