Given that ΔGr^r(Fe2 O3)=-741.0 kJ / mol and that ΔGi^z(Al2 O3)=-1576.4 kJ / mol, calculate ΔG

Name: Problem 58, Chapter 21: Chemistry
Uploaded: 2020-07-01T15:52:08-08:00
Duration: 3 min 8 s
Channel: Elham Kordzadeh
Description: Given that ΔGr^r(Fe2 O3)=-741.0 kJ / mol and that ΔGi^z(Al2 O3)=-1576.4 kJ / mol, calculate ΔG^∘ for the following reactions at 25^∘ C : (a) 2 Fe2 O3(s) ⟶4 Fe(s)+3 O2(g) (b) 2 Al2 O3(s) ⟶4 Al(s)+3 O2(g)

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Question

Given that $\Delta G_{\mathrm{r}}^{\mathrm{r}}\left(\mathrm{Fe}_2 \mathrm{O}_3\right)=-741.0 \mathrm{~kJ} / \mathrm{mol}$ and that $\Delta G_{\mathrm{i}}^{\mathrm{z}}\left(\mathrm{Al}_2 \mathrm{O}_3\right)=-1576.4 \mathrm{~kJ} / \mathrm{mol}$, calculate $\Delta G^{\circ}$ for the following reactions at $25^{\circ} \mathrm{C}$ : (a) $2 \mathrm{Fe}_2 \mathrm{O}_3(s) \longrightarrow 4 \mathrm{Fe}(s)+3 \mathrm{O}_2(g)$ (b) $2 \mathrm{Al}_2 \mathrm{O}_3(s) \longrightarrow 4 \mathrm{Al}(s)+3 \mathrm{O}_2(g)$

   Given that $\Delta G_{\mathrm{r}}^{\mathrm{r}}\left(\mathrm{Fe}_2 \mathrm{O}_3\right)=-741.0 \mathrm{~kJ} / \mathrm{mol}$ and that $\Delta G_{\mathrm{i}}^{\mathrm{z}}\left(\mathrm{Al}_2 \mathrm{O}_3\right)=-1576.4 \mathrm{~kJ} / \mathrm{mol}$, calculate $\Delta G^{\circ}$ for the following reactions at $25^{\circ} \mathrm{C}$ :
(a) $2 \mathrm{Fe}_2 \mathrm{O}_3(s) \longrightarrow 4 \mathrm{Fe}(s)+3 \mathrm{O}_2(g)$
(b) $2 \mathrm{Al}_2 \mathrm{O}_3(s) \longrightarrow 4 \mathrm{Al}(s)+3 \mathrm{O}_2(g)$

Chemistry

Raymond Chang, Jason… 14th Edition

Chapter 21, Problem 58

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Given that $\Delta G_{\mathrm{r}}^{\mathrm{r}}\left(\mathrm{Fe}_2 \mathrm{O}_3\right)=-741.0 \mathrm{~kJ} / \mathrm{mol}$ and that $\Delta G_{\mathrm{i}}^{\mathrm{z}}\left(\mathrm{Al}_2 \mathrm{O}_3\right)=-1576.4 \mathrm{~kJ} / \mathrm{mol}$, calculate $\Delta G^{\circ}$ for the following reactions at $25^{\circ} \mathrm{C}$ : (a) $2 \mathrm{Fe}_2 \mathrm{O}_3(s) \longrightarrow 4 \mathrm{Fe}(s)+3 \mathrm{O}_2(g)$ (b) $2 \mathrm{Al}_2 \mathrm{O}_3(s) \longrightarrow 4 \mathrm{Al}(s)+3 \mathrm{O}_2(g)$