Question

a metal
it exist as a liquid at room temperature is obtained by heating its sulphide in the presence of air identify the metal and its Ore and give the reaction involved

Answer 1

HEYA MATE, HERE IS UR ANSWER

$<b><i><u>The metal is Mercury (Hydragyrum ) and the compound is Mercury (ll) sulphide.$

Its ore is known as Cinnabar.

When HgS is heated in air,HgO will form and on further heating, pure Hg will be obtained.

2HgS+3O2----->2HgO +2SO2

This is called roasting.

When 2HgO is heated above 300 C It decomposes and pure mercury is obtained.

2Hg0 ------>2Hg+O2

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