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The Value ofDeltaG^(@) 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 ? |
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Answer» Solution :`Cr_(2)O_(3)+2Alrarr Al_(2)O+2Cr, DELTAG^(+)=-827-(-540)=-287kJ`. For the REDUCTION of `Cr_(2)O_(3)` with `AL, DeltaG^(@)` is negative and hence is POSSIBLE. |
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