2 C-IVH4 + 2 NH3 + 3 O20 2 HCIIN + 6 H2O-II

This is an oxidation-reduction (redox) reaction:

2 C-IV - 12 e- 2 CII (oxidation)

6 O0 + 12 e- 6 O-II (reduction)

Change the oxidation states