Zinc blende ore on roasting at above 85 0 ∘ C gives

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ChemistryMetallurgyPurification of Ores, Calcination and roastingMedium2 minQB

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Zinc blende ore on roasting at above $85 0^{\circ} C$ gives

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Solution:

The roasting of zinc blende (ZnS) at high temperatures (above $85 0^{\circ} C$ ) in the presence of air (oxygen) converts it into zinc oxide (ZnO) and sulfur dioxide (SO₂).

The reaction is:

$2 ZnS (s) + 3 O_{2} (g) Δ 2 ZnO (s) + 2 S O_{2} (g)$

Stream:JEESubject:ChemistryTopic:MetallurgySubtopic:Purification of Ores, Calcination and roasting

⏱ 2mℹ️ Source: QB

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