What is produced when sulfuric acid reacts with copper oxide?

When sulfuric acid reacts with copper oxide, the reaction involves an acid-base interaction where sulfuric acid acts as the acid and copper oxide functions as the base. The chemical equation for this reaction is:

[ \text{H}_2\text{SO}_4 + \text{CuO} \rightarrow \text{CuSO}_4 + \text{H}_2\text{O} ]

This reaction produces copper sulfate, which is a salt formed from the neutralization reaction, and water as a byproduct. The presence of water is a direct result of the combination of hydrogen ions (from sulfuric acid) with oxide ions (from copper oxide).

In the context of the other options, while copper sulfate is indeed formed in some of the other choices, they incorrectly suggest additional or different products such as carbon dioxide or oxygen, which are not produced in this specific reaction. The formation of solid copper or other components does not occur during this acid-base interaction, further solidifying the correctness of producing just copper sulfate and water. Thus, the correct answer indicates a clear understanding of acid-base reactions and the process of salt formation.