Q. What is 3 COOH?

“3 COOH” indicates the presence of three carboxyl (–COOH) groups in a molecule. It does not represent a complete chemical formula by itself, but rather a structural description used in organic chemistry.

Compounds with multiple COOH groups, such as citric acid, tend to be more acidic and more reactive. In biological systems, molecules with several carboxyl groups often play roles in metabolism and buffering because they can donate more than one proton.