Name the ore of mercury.How it is extracted from its ore?Write equation.
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Mercury is obtained from its sulphide ore called cinnabar, HgS which is actually mercury(ii) sulphide.
The following steps are involved in its extraction:
1. mercury ore is roasted
2HgS(s) + 3 o2 (g) -----> 2HgO (s ) + 2 SO2 (g)
2. when this mercury oxide is heated at about 300 degrees Celsius , it decomposes to form mercury metal.
2HgO (s) ------> 2Hg (l) + o2(g)
The following steps are involved in its extraction:
1. mercury ore is roasted
2HgS(s) + 3 o2 (g) -----> 2HgO (s ) + 2 SO2 (g)
2. when this mercury oxide is heated at about 300 degrees Celsius , it decomposes to form mercury metal.
2HgO (s) ------> 2Hg (l) + o2(g)
Raj021:
good answer.
thank you
Answered by
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the ore of mercury is called cinnabar .by the process of roasting I.e. heating with excess of oxygen breks ore of mercury to H2S and on further heating changes to Hg.
2HgS + O2 = 2Hg + SO2
2HgS + O2 = 2Hg + SO2
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