Question

Describe the extraction of mercury metal from its pretty cinnabar (HgS)

Answer 1

Taken metal : mercury

Ore : cinnabar HgS

Process : roasting

The process of heating the sulphide ore to a high temperature in the presence of oxygen

2Hgs+3o2⇒2HgO+2SO2

Heatng theoxide ore to high temperature

2HgO+HEAT⇒2Hg+O2

Answer 2

cinnabar=HgS

firstly it is heated in the presence of air

HgS+O2=HgO+SO2

since these metals are  less reactive their metals can be obtained from their oxides  by heating alone

HgO=Hg+O2