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Grade 12th passPhysical Chemistry

Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly?
(1) CO2 is more volatile than CS2.
(2) Metal sulphides are thermodynamically more stable than CS2.
(3) CO2 is thermodynamically more stable than CS2.
(4) Metal sulphides are less stable than the corresponding oxides.

Profile image of Harshit Singh
5 Years agoGrade 12th pass
Answers icon

1 Answer

Profile image of Pawan Prajapati
5 Years ago
Answer ::

Oxidising roasting is a type of roasting in metallurgy. It is carried out to remove sulphur and arsenic in the form of their volatile oxides. CS2 is more volatile than CO2. Statement (1) is of no significance for roasting sulphide ores to their oxides.
Hence option (1) is the answer.


Thanks

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