The standard Gibbs energy change value `(Deltat_(r)G^(Theta))` at `1773K` are given for the following reactions:
`4Fe +3O_(2) rarr 2Fe_(2)O_(3), Delta_(r)G^(Theta) = - 1487 kJ mol^(-1)`
`4AI +3O_(2) rarr 2AI_(2)O_(3),Delta_(r)G^(Theta) =- 22500 kJ mol^(-1)`
`2CO +O_(2) rarr 2CO_(2),Delta_(r)G^(Theta) =- 515 kJ mol^(-1)`
Find out the possibility of reducing `Fe_(2)O_(3)` and `AI_(2)O_(3)` with `CO` at this temperature.

Explanation

`2AI_(2)O_(3)rarr 4AI +3O_(2), Delta_(r)G^(Theta) = 22500 kJ mol^(-1)`
Since `Delta_(r)G^(Theta)` is `+ve` decomposition is non-spontaneous.
Let us consider another reaction,
`2CO +O_(2) rarr 2CO_(2), Delta_(r)G^(Theta) = - 515 kJ mol^(-1)`
We wish to consider whther reduction of `AI_(2)O_(3)` with `CO` is feasible or not.