When, compared to Δ G^° for the formation of Al_2 O_3 , the Δ G^° for the formation of Cr_2 O_3 is

Correct answer: (B) lower. Δ G^° for the formation of Al_2 O_3 is higher than Δ G^° for the formation of Cr_2 O_3 .

Q14 / 180 · COMEDK 2017 · Chemistry

When, compared to $\Delta G^{\circ}$ for the formation of $\mathrm{Al}_{2} \mathrm{O}_{3}$, the $\Delta G^{\circ}$ for the formation of $\mathrm{Cr}_{2} \mathrm{O}_{3}$ is

A
higher
Correct answer
B
lower
C
same
D
unpredicted

Solution

$\Delta \mathrm{G}^{\circ}$ for the formation of $\mathrm{Al}_{2} \mathrm{O}_{3}$ is higher than $\Delta G^{\circ}$ for the formation of $\mathrm{Cr}_{2} \mathrm{O}_{3}$.

Hence, the correct answer is option: 'B'.

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