For the following reaction, calculate an approximate value for the change in free energy, and determine whether or not the reaction is spontaneous under standard conditions.
Compound
D
G
f
º (kJ/mol)
NO
2
52
HCN
125
CO
2
–394
H
2
O
–237
O
2
0
–230 kJ/mol, yes
+2300 kJ/mol, yes
–1171 kJ/mol, yes
+230 kJ/mol, no
+2300 kJ/mol, no