3 Br₂ (aq) + 3 Na₂CO₃ (aq) → 5 NaBr (aq) + NaBrO₃ (aq) + 3 CO₂ (g)

This is an oxidation-reduction (redox) reaction:

Br₂ is both an oxidizing and a reducing agent (disproportionation (dismutation)).

This is a gas evolution reaction, CO₂ is the formed gas.

Reactants:

• Br₂
  • Names: Bromine , Molecular bromine
  • Appearance: Fuming red-to-brown liquid with pungent odour ; Dark reddish-brown, fuming liquid with suffocating, irritating fumes.
• Na₂CO₃ – Sodium carbonate
  • Other names: Soda ash , Washing soda , Soda crystals ... show moreSodium carbonate (anhydrous) , Na2CO3 , Disodium carbonate , Natriumkarbonat , Carbonic acid sodium salt (1:2) , Anhydrous sodium carbonate , Carbonic acid, disodium salt , Sodium carbonate, anhydrous , Soda-ash , Natrum carbonicum , Sodium carbonate anhydrous , Sodium salt of carbonic acid , Carbonic acid disodium salt show less
  • Appearance: White solid, hygroscopic ; White hygroscopic powder

Products:

• NaBr – Sodium bromide
  • Other names: Bromide salt of sodium , Trisodium tribromide , NaBr
  • Appearance: White powder, hygroscopic
• NaBrO₃ – Sodium bromate
  • Other names: Sodium bromate(V) , Bromic acid , Sodium salt ... show moreNaBrO3 , Bromic acid, sodium salt show less
  • Appearance: Colorless or white solid ; Colourless crystals
• CO₂
  • Names: Carbon dioxide , {{plainlist| , CO2 ... show moreCarbonic acid gas , Dry ice , [CO2] , Carbonic anhydride , R-744 , E-290 , E 290 , E290 , Carbonic acid anhydride , Carbon-12 dioxide , Methanedione , Carbon oxide , CO₂ , [Note: Normal constituent of air (about 300 ppm)]. show less
  • Appearance: Colorless gas ; Odourless colourless compressed liquefied gas ; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.]