Final answer:
The balanced chemical equation for the reaction between aqueous chloride ion (Cl-) and aqueous bromine (Br2) is 2Cl- (aq) + Br2 (l) → 2Br- (aq) + Cl2 (g).
Step-by-step explanation:
The reaction between aqueous chloride ion (Cl-) and aqueous bromine (Br2) is a single-replacement reaction where the chloride ion displaces bromine from its molecular form.
The balanced chemical equation for this reaction is:
2Cl- (aq) + Br2 (l) → 2Br- (aq) + Cl2 (g)
When chlorine gas reacts with bromide ions in the aqueous solution, chlorine gets reduced to chloride ions, and bromide ions get oxidized to molecular bromine, which can be released as a gas.