Question

Explain the extraction of metals low in reactivity series.

Answer 1

Metals of low reactivity series are generally extracted by the process of roasting and calcination. Roasting is the extraction of metals by heating in presence of oxygen i.e. that Cinnebar is heated with o2 which gives SO2 and Hg.

HgS + O2---------- Hg + SO2

While calcination is the heating the ore without oxygen i.e. Ferric Oxide(Fe3O4) is with carbon then they release Fe and CO2

Answer 2

Answer:

Metals that are low in the activity series are very un-reactive. The oxides of these metals can be reduced to metals by heating alone. For example, mercury is obtained from its ore, cinnabar (HgS), by the process of heating.