Question

How will you extract Mercury from its sulphide Ore write chemical equation for extraction identify the sulphide ore

Answer 1

When cinnabar,a ore of mercury, is heated in air, it is first oxidised and converted into mercuric oxide (HgO).


Mercuric oxide on further heating  is then reduced to mercury .


The following are the equations which take place.


2HgS(s) + 3O2(g) -Heat → 2HgO(s) + 2SO2(g) ..2HgO(s) Heat → 2Hg(l) + O2(g).

Answer 2

When it is heated in air, it is first converted into mercuric oxide (HgO). Mercuric oxide is then reduced to mercury on further heating.