Question

Copper can be found as a free metal, but most often it is found in a compound with sulfur, such as CuS (covellite) or Cu2S (chalcocite).

Answer 1

These ores often are heated with oxygen to change them to copper oxides. Sulfur dioxide gas also is formed. Write a balanced chemical equation for this reaction for each of the copper sulfides?

Answer 2

The first one is: 2 CuS + O2 -> 2CuO + 2S

you can try the second.

Answer 3

sorry correction, i didn't see it said it also forms sulfur dioxide, so it should be: 2 CuS + 3 O2 -> 2CuO + 2 SO2