Does the oxidation of corboxylic acid produces carbondioxide?
Yes. Carboxylic acids are a class of compounds with the chemical formula R-COOH. It already has lots of oxygen so the reaction with oxidyzing agents such as bromine tends to break down the caboxyl group -COOH into CO2 and other compounds. The general equation for such a reactionwould be:
R-COOH + Br2 > R-Br + HBr + CO2
This type of reaction requires a catalyst to facilitate the reaction.