How the metals are extracted lying low in the activity series?

1.	How the metals are extracted lying low in the activity series?
Answer» Metals that are low in the activity series are very un-reactive. The oxides of these metals can be reduced to metals by heating alone. For example, mercury is obtained from its ore, cinnabar (HgS), by the process of heating. 2HgS + 3O₂ + ∆ → 2HgO + 2SO₂ (Roasting) 2HgO + ∆ → 2Hg +O₂ (Reduction) Another instance is reduction of Cu₂S (ore of copper) to copper by heating. 2Cu₂S + 3O₂ + ∆ → 2Cu₂O + 2SO₂ (Roasting) 2Cu₂O + Cu₂S + ∆ → 6Cu + SO₂ (Reduction) Metals falling low in activity series are found in free states or in the form of sulphides ores in nature. Metals that are low in the activity series are not reactive. The oxides of these metals can be reduced to metals by heating alone. For example, mercury is obtained from its ore, cinnabar (HgS), by the process of heating. HgS + O2---------- Hg + SO2 While calcination is the heating the ore without oxygen i.e. Ferric Oxide(Fe3O4) is with carbon then they release Fe and CO2

Answer»

Metals that are low in the activity series are very un-reactive. The oxides of these metals can be reduced to metals by heating alone.

For example, mercury is obtained from its ore, cinnabar (HgS), by the process of heating.

2HgS + 3O₂ + ∆ → 2HgO + 2SO₂ (Roasting)

2HgO + ∆ → 2Hg +O₂ (Reduction)

Another instance is reduction of Cu₂S (ore of copper) to copper by heating.

2Cu₂S + 3O₂ + ∆ → 2Cu₂O + 2SO₂ (Roasting)

2Cu₂O + Cu₂S + ∆ → 6Cu + SO₂ (Reduction)

Metals falling low in activity series are found in free states or in the form of sulphides ores in nature.

Metals that are low in the activity series are not reactive. The oxides of these metals can be reduced to metals by heating alone. For example, mercury is obtained from its ore, cinnabar (HgS), by the process of heating.

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

While calcination is the heating the ore without oxygen i.e. Ferric Oxide(Fe3O4) is with carbon then they release Fe and CO2

How the metals are extracted lying low in the activity series?

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