What is cinnabar? how it is a metal extracted from cinnabar? explain briefly.
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it is an ore of mercury.when heated in air it first changes into its oxide,HgO and reduced into mercury on further heating
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Heya friend here's your answer....
Cinnabar also known as HgS is termed as the mercury ore.
Mercury can be obtained from cinnabar by heating the cinnabar ore in a current of air and condensing the mercury vapour formed. Due to its relatively low boiling point mercury can be easily purified by vacuum distillation. The reaction of mercury sulphide with oxygen is shown below:
HgS + O2 = Hg + SO2
This process is also called Roasting. However Mercury can be obtained from other reactions too. For ex:
HgS + Fe = Hg + FeS
4HgS + 3 CaO = 4Hg + 3CaS + CaSO4
Hope this helps...
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