Question

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

Answer 1

Hg is the metal and the ore is HgS. It is called Cinnabar.

HgS + O2 ------> Hg + SO2

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Answer 2

The metal is Mercury, the ore is Mercuric Sulphide also called Cinnabar and the reaction is:

$HgS + O_2 \rightarrow Hg + SO_2$ (on heating).

Explanation:

• Mercury exists in the liquid state.

• It will be in the silver colour in the liquid form and is mainly used lamps, thermometers, telescopes, etc.

• It is also considered as the only metal which can and which will exist at room temperature.

• It is very toxic and even leads to death when it is consumed. Its weight is 200 grams.

• It is obtained by heating the ore named Cinnabar also known as Mercuric Sulphide in the presence of Oxygen.

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