A) \[C{{O}_{2}}\]is more volatile than \[C{{S}_{2}}\].
B) Metal sulphides are thermo dynamically more stable than \[C{{S}_{2}}\].
C) \[C{{O}_{2}}\] is thermodynamically more stable than \[C{{S}_{2}}\].
D) Metal sulphides are less stable than the corresponding oxides.
Correct Answer: A
Solution :
[a] : Oxidising roasting is a very common type of roasting in metallurgy and is carried out to remove sulphur and arsenic in the form of their volatile oxides. \[C{{S}_{2}}\]is more volatile than \[C{{O}_{2}}\]. So, option [a] is of no significance for roasting sulphide ores to their oxides. The reduction process is on the thermodynamic stability of the products and not on their volatility.You need to login to perform this action.
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