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  4. When compared to Δ G° for the formation of Al2O3, the Δ G° for the formation of Cr2O3 is

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Q. When compared to $\Delta G^\circ$ for the formation of $Al_2O_3$, the $\Delta G^\circ$ for the formation of $Cr_2O_3$ is

KCETKCET 2008General Principles and Processes of Isolation of Elements

Solution:

Between$ Al_2O_3$ and $Cr_2O_3, Al_2O_3$ is more stable, so its ease of formation is high i.e., $\Delta G°$ is negative or less than that of $Cr_2O_3$.

Hence,$ \Delta G°$ of $ Cr_2O_3$ > $\Delta G°$ of $ Al_2O_3$