Question

Why are sulphide ores converted to oxide before reduction?


NCERT Class XII
Chemistry - Exemplar Problems

Chapter 6. General Principles and Processes of Isolation of Elements

Answer 1

because reduction can be done easily with oxides compared to sulphides..

Answer 2

Sulfides ores are changed to oxides because oxides undergo rapid reduction than sulfides.

Explanation:

• The main principle of conversion of ores into respective metal is that ores must be changed into such form which is suitable for a reduction.
• In the case of sulfide ores, it is very difficult to obtain elements because they don't support the reduction process.
• Thus it is converted into oxides and is then reduced to metal.
• The process involved in isolation of metals from sulfide ore is as follows:

1. Sulfide ores to oxide ores
2. Oxide ores reduction into metals.

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