Question

What are the two important step in the extraction of metals in the middle of reactivity series?

Answer 1

•Calcination: it is a process in which a metal carbonate ore is heated strongly in the absence of air (or O2)

Eg---- ZnCO3----->ZnO+CO2

•Then the metal oxide obtained is reduced using Carbon as reducing agent

ZnO+C----->Zn+CO

•Roasting: it is a process in which a metal sulphide ore is heated strongly in the presence of O2

Eg---- 2ZnS+3O2-------> 2ZnO+2SO2

•again the metal oxide obtained is reduced using Carbon as reducing agent.......

Hope this helps you....