Oxygen
Chemical reactions
Reaction of oxygen with acidsUnder normal circumstances, oxygen, O2, does not react with acids.
Reaction of oxygen with airUnder normal circumstances, oxygen, O2, does not react with itself or other components in the air. If exposed to UV light or an electrical discharge, ozone, O3, is formed:
3 O2(g)  2 O3(g)Reaction of oxygen with basesUnder normal circumstances, oxygen, O2, does not react with bases.
Reaction of oxygen with halogensOxygen, O2, can be brought to react with fluorine, F2, forming dioxygen difluoride, O2F2. It requires irradiation of a mixture, at low pressure (10-20 mm Hg) and low temperature (77 - 90 K):
O2(g) + F2(g) O2F2(g)Reaction of oxygen with sulfurSulfur reacts with oxygen forming sulfur dioxide and trioxide [3]:
S(s) + O2(g) SO2(g)2 SO2(g) + O2(g) Δ 2 SO3(g) Reaction of oxygen with waterUnder normal circumstances, oxygen, O2, does not react with water, but is dissolved in the water (30 g/l (20 °C) [1])
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