Aluminum forms a layer of aluminum oxide when exposed to air which protects the bulk metal from further corrosion, 4Al(s) + 3O2(g) → 2Al2O3(s).
ΔG° for this reaction is ___________ and this reaction is ____________ .
|
ΔG°f (kJ/mol) |
|
|
Al(s) |
0 |
|
O2(g) |
0 |
|
Al2O3(s) |
-1576.4 |
Select one:
a. 0 kJ/mol; at equilibrium
b. 3152.8 kJ/mol; spontaneous
c. 3152.8 kJ/mol; nonspontaneous
d. -3152.8 kJ/mol; spontaneous
e. -3152.8 kJ/mol, nonspontaneous

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Aluminum forms a layer of aluminum oxide when exposed to air which protects the bulk metal...
When exposed to air, aluminum metal, Al, reacts with oxygen, O2, to produce a protective coating of aluminum oxide, Al2O3, which prevents the aluminum from rusting underneath. The balanced reaction is shown here: 4Al+3O2→2Al2O3 a. What is the theoretical yield of aluminum oxide if 1.60 mol of aluminum metal is exposed to 1.50 mol of oxygen?
When exposed to air, aluminum metal, Al, reacts with oxygen, O2, to produce a protective coating of aluminum oxide, Al2O3, which prevents the aluminum from rusting underneath. The balanced reaction is shown here: 4Al+3O2→2Al2O3 In Part A, we saw that the theoretical yield of aluminum oxide is 1.90 mol . Calculate the percent yield if the actual yield of aluminum oxide is 1.18 mol .
When exposed to air, aluminum metal, Al, reacts with oxygen, O2, to produce a protective coating of aluminum oxide, Al2O3, which prevents the aluminum from rusting underneath. The balanced reaction is shown here: 4Al+3O2→2Al2O3 1. In Part A, we saw that the theoretical yield of aluminum oxide is 1.30 mol . Calculate the percent yield if the actual yield of aluminum oxide is 0.858 mol .
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