Question
Tue August 23, 2011 By: Sai Prathyusha Vytla

if mercury isaliquid matal then how is it obtainedafter extraction??

Expert Reply
Tue August 23, 2011

cinnabar is the ore of mercury in whixh it is present as its sulphide.

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

Other processes for the removal of mercury from cinnabar are also known

 

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