Question

which molecule contains a carboxyl group and acts as an acid? a. molecular structure with h, c, oh etc b. molecular structure with h, c, o etc c. molecular structure with h, c, o etc d. molecular structure with h, c, oh etc e. molecular structure with h, c, n etc od oa oc ob oe

Explanation:

A carboxyl group has the structure -COOH. We need to identify the molecule with this group among the options. Molecule D has a -COOH group. Carboxylic acids, which contain the carboxyl group, can donate a proton (H⁺) and act as acids.

Answer:

D. The molecule with -COOH group

(It seems there was an error in the original answer choice selection in the question setup as the correct answer should be D if we are looking for the molecule with a carboxyl group, but based on the steps above, D is the correct -COOH containing molecule).