Question

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.

Answer 1

The Reacton is spontaneous.

Step-by-step explanation:

ΔG=-3000

Answer 2

If I am understanding correctly, the dGf for Al2O3 is of negative value, which indicates that the reaction is spontaneous.