Question

Roasting of copper sulphide

Answer 1

heya..!!

Roasting of copper sulphide.

  2Cu2S + 3O2  →  2Cu2O + 2SO2copper                      coppersuphide      +         oxide

hope it helps :)

Answer 2

"Roasting is a process of heating ofsulphide ore to a high temperature in presence of air. ... During roasting, the sulfide is converted to an oxide, and sulfur is released as sulfur dioxide, a gas."
For the ores Cu2S (chalcocite) and ZnS (sphalerite), balanced equations for the roasting are:
2 Cu2S + 3 O2 → 2 Cu2O + 2 SO.