General Principles And Processes of Isolation Of Elements

Short Answer Type

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Why reduction of a metal oxide becomes easier if the metal formed is in liquid state at the temperature of reduction?

The entropy is higher if the metal is in liquid state than when it is in solid state. The value of entropy change (ΔS) of the reduction process is more on +ve side when the metal formed is in liquid state and the metal oxide being reduced is in solid state. Thus the value of ΔG° becomes more on negative side and the reduction becomes easier.
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