During complete oxidation of carbohydrates, which gas is produced?

During the complete oxidation of carbohydrates, carbon dioxide is produced as a primary byproduct. Carbohydrates, when metabolized by organisms, undergo a series of biochemical reactions in processes such as cellular respiration. In these processes, glucose (a common carbohydrate) is broken down in the presence of oxygen to produce energy, water, and carbon dioxide.

The overall reaction can be summed up as follows:

[ \text{C}6\text{H}{12}\text{O}_6 + 6 \text{O}_2 \rightarrow 6 \text{CO}_2 + 6 \text{H}_2\text{O} + \text{energy} ]

This equation illustrates that for every molecule of glucose, six molecules of carbon dioxide are produced alongside water and energy. Hence, in the context of complete oxidation of carbohydrates, the production of carbon dioxide is the key outcome, highlighting its role in cellular respiration and metabolism, making it the correct answer in this scenario.