Question

Write a chemical reaction involved in the process of roasting.

Answer 1

Answer:

i) If the metal is found in the form of sulphides, They are roasted (roasting is the process of heating[less than the melting point of metal] metals sulphides  (metal sulphides) to remove sulphur gas from the metal,. and the metal is converted to metal oxide as a step of purification ), and reduced to oxide form,.

Eg: copper is found as copper sulphide so, they are roasted to form copper oxide.

Cu2 S + 3O2(g)  → 2Cu2 O(s)  +2SO2(g)  (Heat is supplied)