A metal that exists as a liquid at room temperature is obtained by heating its sulfide in the presence of air. Identify the metal and its ore and give the reactions involved.

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Solution

In the case of metals low in activity series, on heating the sulfides and oxides are reduced.
Here, the metal liquid at room temperature is mercury. As we heat mercury sulfide ore it gives mercury.
$2 HgS + 3 O_{2} \to 2 HgO + 2 {SO}_{2}$
$2 HgO \to 2 Hg + O_{2}$

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A metal that exists as a liquid at room temperature is obtained by heating its sulfide in the presence of air. Identify the metal and its ore and give the reactions involved.

In the case of metals low in activity series, on heating the sulfides and oxides are reduced.Here, the metal liquid at room temperature is mercury. As we heat mercury sulfide ore it gives mercury. 2HgS+3O2→2HgO+2SO22HgO→2Hg+O2

In the case of metals low in activity series, on heating the sulfides and oxides are reduced.
Here, the metal liquid at room temperature is mercury. As we heat mercury sulfide ore it gives mercury.
$2 HgS + 3 O_{2} \to 2 HgO + 2 {SO}_{2}$
$2 HgO \to 2 Hg + O_{2}$