Cl2 + 2 HBr → 2 HCl + Br2 – Balanced equation

Or you want a quick look:

This is an oxidation-reduction (redox) reaction:

2 Br-I - 2 e- 2 Br (oxidation)

2 Cl + 2 e- 2 Cl-I (reduction)

HBr is a reducing agent, Cl2 is an oxidizing agent.

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Reactants:

  • Cl2
    • Names: Chlorine , Molecular chlorine
    • Appearance: Greenish-yellow compressed liquefied gas with pungent odour ; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
  • HBrHydrogen bromide , Bromane
    • Other names: Hydrobromic acid , Hydronium bromide , HBr
    • Appearance: Colorless gas ; Colorless/faint yellow liquid ; Colourless compressed liquefied gas with pungent odour ; Colorless gas with a sharp, irritating odor. [Note: Shipped as a liquefied compressed gas. Often used in an aqueous solution.]

Products:

  • HClChlorane , Hydrogen chloride
    • Other names: Hydrochloric acid , M , Uriatic acid
    • Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
  • Br2
    • Names: Bromine , Molecular bromine
    • Appearance: Fuming red-to-brown liquid with pungent odour ; Dark reddish-brown, fuming liquid with suffocating, irritating fumes.
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