Question

Copper can be found as a free metal, but most often it is found in a compound with sulfur. The ore is heated with oxygen to change it to copper oxide. Sulfur dioxide gas also is formed. Write a balanced chemical equation for this reaction. [You must include state: (s), (l), (g), (aq).]

Answer 1

Cu₂S_(s) + 2O_2(g) $\to$ 2CuO_(s) +SO_2(g)