Cr2O3 + 2 NaCO3 + 3 KNO3 → 2 NaCrO4 + 3 KNO2 + 2 CO2
This is an oxidation-reduction (redox) reaction:
2 CV + 2 e- → 2 CIV (reduction)
3 NV + 6 e- → 3 NIII (reduction)
2 CrIII - 8 e- → 2 CrVII (oxidation)
NaCO3 is an oxidizing agent, KNO3 is an oxidizing agent, Cr2O3 is a reducing agent.
Warning: Unknown compound 'NaCO3'. Did you mean NaCo3?
Warning: Unknown compound 'NaCrO4'