when compared to `DeltaG^(@)` for the formation of `A1_(2)O_(3)` the `Deltag^(@)` for the formation of `Cr_(2)O_(3)` is

When compared to DeltaG^(@) for the formation of Al_(2)O_(3), the DeltaG^(@) for the formation of Cr_(2)O_(3) is

When compared to the 'Delta G^circ' for the formation of 'Al_2 O_3', the 'Delta G^circ' for the formation of 'Cr_2 O_3' is Same unpredicted higher lower

The formation of O_(3) from O_(2) is

The Value of DeltaG^(@) for the formation of Cr_(2)O_(3) is -"540KJ mol"^(-1) and that of Al_(2)O_(3) is -827"KJ mol"^(-1) . Is the reduction of Cr_(2)O_(3) possible with Al ?