10 NHO3 + CuS → Cu(NO3)2 + H2SO4 + 8 NO2 + 4 H2O
This is an oxidation-reduction (redox) reaction:
S-II - 8 e- → SVI (oxidation)
8 NV + 8 e- → 8 NIV (reduction)
CuS is a reducing agent, NHO3 is an oxidizing agent.
Reactants:
Products:
- Cu(NO3)2 – Copper(II) nitrate
- H2SO4 – Sulfuric acid
- NO2 – Nitrogen dioxide
- Other names: Nitrogen(IV) oxide , Deutoxide of nitrogen , Nitrogen peroxide
- Appearance: Brown gas ; Reddish-brown gas or brown or yellow liquid with pungent odour ; Yellowish-brown liquid or reddish-brown gas (above 70°F) with a pungent, acrid odor. [Note: In solid form (below 15°F) it is found structurally as N2O4.]
- H2O – Water, oxidane