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4 June, 09:22

Using table provided, determine which of the following statements is true about the reaction of aluminum with oxygen gas (4 Al (s) + 3 O2 (g) arrow 2 Al2O3 (s)) at 25 degrees Celsius and 1 atmosphere.

Substance

ΔGf (kJ/mol)

Substance

ΔGf (kJ/mol)

Al2 O3

-1576.4

NaCl

-384.03

H2

0.0

Cl2 (g)

0.0

O2 (g)

0.0

Na (s)

0.0

NH3 (g)

-16.64

Na2 CO3

-1048

N2 O5 (s)

118.68

NO2 (g)

51.84

HCl (g)

-95.27

Al (s)

0.0

The reaction produces no change in ΔG.

The reaction is nonspontaneous.

The reaction is spontaneous.

The reaction produces a + ΔG.

+5
Answers (1)
  1. 4 June, 09:42
    0
    If I am understanding correctly, the dGf for Al2O3 is of negative value, which indicates that the reaction is spontaneous.
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