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

Question

When compared to Δ G° for the formation of Al2O3, the Δ G° for the formation of Cr2O3 is (A) higher (B) lower (C) same (D) unpredicted

Tardigrade Admin · Accepted Answer

Between Al2O3 and Cr2O3, Al2O3 is more stable, so its ease of formation is high i.e., Δ G° is negative or less than that of Cr2O3. Hence, Δ G° of Cr2O3 > Δ G° of Al2O3

Q. When compared to $Δ G^{\circ}$ for the formation of $A l_{2} O_{3}$ , the $Δ G^{\circ}$ for the formation of $C r_{2} O_{3}$ is

higher

lower

same

unpredicted

Between $A l_{2} O_{3}$ and $C r_{2} O_{3}, A l_{2} O_{3}$ is more stable, so its ease of formation is high i.e., $Δ G °$ is negative or less than that of $C r_{2} O_{3}$ .

Hence, $Δ G °$ of $C r_{2} O_{3}$ > $Δ G °$ of $A l_{2} O_{3}$

Q. When compared to ΔG∘ for the formation of Al2​O3​, the ΔG∘ for the formation of Cr2​O3​ is