Potassium bromide (KBr) and fluorine (F₂) react to form potassium fluoride (KF) and bromine (Br₂). This is a single displacement reaction where the more reactive fluorine displaces the bromide from the potassium bromide.

Here's the balanced chemical equation:

2 KBr + F₂ → 2 KF + Br₂

Important Note: This reaction is highly exothermic and can be dangerous. It should only be performed by trained professionals in a controlled environment.