Bromine can be liberated from potassium bromide solution by action of

Chlorine is stronger oxidising agent than bromine therefore, chlorine water will liberate bromine from

$\mathrm{KBr}\text{ solution. }2\mathrm{KBr}+{\mathrm{Cl}}_2\to 2\mathrm{KCl}+{\mathrm{Br}}_2\text{. }$