Question

multiple choice 1 point which of the following functional groups increases the concentration of hydrogen ions in a solution? hydroxyl carbonyl amino carboxyl

Explanation:

Functional groups that release hydrogen ions ($H^+$) in solution increase $H^+$ concentration. Carboxyl groups ($-COOH$) readily dissociate in water to release $H^+$ and form carboxylate ions ($-COO^-$). Hydroxyl groups are weakly acidic, carbonyl groups do not release $H^+$, and amino groups accept $H^+$ (decreasing $H^+$ concentration).

Answer:

Carboxyl