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Q.

From the graph, which is the best reducing agent to reduce Cu2O at high temperature

Using Ellingham diagram, predict which metal can readily reduce the Cu2O to Cu at 400oC. Ellingham diagram:

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a

Coke

b

CO2

c

1 & 2

d

CO

answer is D.

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Detailed Solution

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A element or compound  with lower ∆G°Vs T line for its oxide can reduce the oxide of a metal with higher line than that.

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