Question

why do we convert sulphet ore to. oxide ore​

Answer 1

Answer:

Compounds of certain metals reduce to metals without using any additional reducing agent ores of Cu, Pb, Hg etc. Their sulphide ores are partially roasted to give some oxide. This oxide is now reduced to the metal by the remaining sulphide ore at elevated temperatures in the absence of air.

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Answer 2

Sulphide ores are roasted or heated in plenty of air. The sulphide S changes to sulphur dioxide. The metal reacts with oxygen in the air to become a metal – oxide. Heating removes gaseous and other volatile impurities.

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