Which of the following is not the correct observation based on the Ellingham diagram?

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A metal can reduce the oxide of other metals which lies above it in the Ellingham diagram.

CO is more effective than C as a reducing agent below

metal oxide is higher than Hence oxidation of metal sulphides to oxides is not favourable.

Need for conversion of metal sulphide to metal oxide before reduction can be explained thermodynamically.

answer is A.

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Detailed Solution

Concept- The Ellingham diagram was just a curve that connected the temperature with the Gibbs energy value. In the diagram, metals that have decreased metal oxides are located above. Prior to reduction, metal sulphides oxidise to produce oxides.
The Ellingham diagram was just a curve that connected the temperature with the Gibbs energy value. In the diagram, metals that have decreased metal oxides are located above. Prior to reduction, metal sulphides oxidise to produce oxides. The Ellingham diagram, which provides information on the thermodynamic viability of a reaction but says nothing about its rate or the likelihood that further reactions might be occurring, is solely based on thermodynamic considerations.
According to the Ellingham diagram, the reactive metal oxide from top to bottom is hard to reduce.
Hence, the correct answer is option 1.

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