(NH4)2Cr2O7 (aq) → 4 H2O (l) + N2 (g) + Cr2O3 (s)
This is an oxidation-reduction (redox) reaction:
2 N-III - 6 e- → 2 N0 (oxidation)
2 CrVI + 6 e- → 2 CrIII (reduction)
(NH4)2Cr2O7 is a reducing agent, (NH4)2Cr2O7 is an oxidizing agent.
This is a precipitation reaction: Cr2O3 is the formed precipitate.
This is a gas evolution reaction, N2 is the formed gas.
- (NH4)2Cr2O7 – Ammonium dichromate
- H2O – Water, oxidane