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Aluminum Forms a Layer of Aluminum Oxide When Exposed to Air

Question 28

Multiple Choice

Aluminum forms a layer of aluminum oxide when exposed to air which protects the bulk metal from further corrosion. 4Al(s) + 3O2(g) →\rarr 2Al2O3(s)
Using the thermodynamic data provided below, calculate Δ\Delta S° for this reaction. Aluminum forms a layer of aluminum oxide when exposed to air which protects the bulk metal from further corrosion. 4Al(s) + 3O<sub>2</sub>(g) \rarr 2Al<sub>2</sub>O<sub>3</sub>(s) Using the thermodynamic data provided below, calculate \Delta S° for this reaction. A) 182.3 J/K·mol B) 131.5 J/K·mol C) -182.3 J/K·mol D) -626.2 J/K·mol E) -802.9 J/K·mol


A) 182.3 J/K·mol
B) 131.5 J/K·mol
C) -182.3 J/K·mol
D) -626.2 J/K·mol
E) -802.9 J/K·mol

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