Reactions in the Environment

Note concerning these graphics: Any changes in the sizes of the atoms between reactants and products and between various reactions is purely accidental.

If you encouter any problems in determining the atom label, please refer back to the Color Scheme. Both NO₂ and NO (found in the reactions below) are free radicals.

Reaction #1

Reaction #2

Reaction #3

Reaction #4

Reaction #5

Reaction #6
This is the first step in the industrial production of nitric acid, HNO₃.