Here's why:

* Single Displacement: In this type of reaction, a more reactive element replaces a less reactive element in a compound.

* The Reaction: Chlorine (Cl₂) is more reactive than bromine (Br₂). When chlorine reacts with sodium bromide (NaBr), it displaces the bromine, forming sodium chloride (NaCl) and releasing bromine gas (Br₂).

Here's a breakdown of the reaction:

* Reactants:

* Sodium bromide (NaBr)

* Chlorine gas (Cl₂)

* Products:

* Sodium chloride (NaCl)

* Bromine gas (Br₂)

The balanced chemical equation:

2 NaBr + Cl₂ → 2 NaCl + Br₂

Key Points:

* The reaction occurs because chlorine is more reactive than bromine, meaning it has a greater tendency to gain electrons.

* This type of reaction is often used in the production of halogens like bromine.