| Reactions of Oxygen |
| Oxygen does not react with acids or bases under normal conditions. |
Reactions with water |
| Oxygen will not react with water. |
Reactions with air |
| Oxygen gas does not react with itself or nitrogen under normal conditions. However the effect of ultraviolet light upon oxygen gas is to form the blue gas ozone, O3. |
Reactions with halogens |
| Irradiation of a low pressure mixture of oxygen and fluorine gases will produce dioxygen difluoride. |
O2(g) + F2(g) F2O2(g) |
| Reduction Potentials | |
| Balanced half-reaction | E0 / V |
O2(g) + 4H+ + 4e- 2H2O
|
+1.229 |
O2(g) + 4H+ + 4e- 2H2O
|
+0.815 |
O2(g) + 2H2O + 4e- 4OH- |
+0.401 |
O2(g) + H2O + 2e- HO2- + OH- |
+0.076 |
O2(g) + 2H+ + 2e- H2O2 |
+0.682 |
O3(g) + 2H+ + 2e- O2(g) + H2O
|
+2.07 |
O3(g) + 6H+ + 6e- 3H2O
|
+1.501 |
O3(g) + H2O + 2e- O2(g) + 2OH- |
+1.24 |
HO2- + H2O + 2e- 3OH
|
+0.88 |
H2O2 + 2H+ + 2e- 2H2O
|
+1.776 |