Bromine can only oxidize iodide ions, and is not a strong enough oxidizing agent to convert chloride ions into chlorine. A red solution of iodine is formed (see the note above) until the bromine is in excess. Then a dark gray precipitate is formed.

Does chlorine oxidize bromine?

Chlorine, bromine and iodine

For example, chlorine can oxidise the bromide ions (in, for example, potassium bromide solution) to bromine: The bromine appears as an orange solution.

Is Cl2 or Br the oxidizing agent?

Br− loses an electron; it is being oxidized from Br− to Br2, thus Br− is the reducing agent. Cl2 gains one electron; it is being reduced from Cl2 to 2 Cl−, thus Cl2 is the oxidizing agent.