Answer:
Chlorine (Cl) is the oxidizing agent because it gains an electron.
Step-by-step explanation:
Reaction is as follow,
Cl₂ (aq) + 2 Br⁻ (aq) → 2Cl(aq) + Br₂ (aq)
Oxidation Reaction:
2 Br⁻ → Br₂ + 2 e⁻
Two atoms of Br⁻ (Bromide) looses two electrons to form Br₂ molecule. Hence it is oxidized and is acting as reducing agent.
Reduction Reaction:
Cl₂ + 2 e⁻ → 2 Cl⁻
One molecule of Cl₂ gains two electrons to form two chloride ions (Cl⁻). Therefore, it is reduced and has oxidized Br⁻, Hence, acting as a oxidizing agent.