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Delta(f) G^(Ө) vs T plot in the Ellingha...

`Delta_(f) G^(Ө)` vs `T` plot in the Ellingham diagram slopes downward for the reaction.

A

`C+(1)/(2)O_(2)toCO`

B

`CO+(1)/(2)O_(2)toCO_(2)`

C

`2Ag+(1)/(2)O_(2)toAg_(2)O`

D

`Mg+(1)/(2)O_(2)toMgO`

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The correct Answer is:
A
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