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Determine whether or not is possible for...

Determine whether or not is possible for sodium to reduce aluminium oxide to aluminium at `298K`. Also, calculate equilibrium constant for this reaction at `298K`.
`Delta_(f)G^(Theta)Al_(2)O_(3)(s) =- 1582 kJ mol^(-1)`
`Delta_(f)G^(Theta)Na_(2)O(s) =- 377.7 kJ mol^(-1)`

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