InterviewSolution
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InterviewSolution
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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. |
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Answer» `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. |
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