Rubidium bromide is an inorganic compound with the chemical formula . It is a salt of hydrogen bromide. It consists of bromide anions and rubidium cations . It has a NaCl crystal structure, with a lattice constant of 685 picometres.

Preparation

There are several methods for synthesising rubidium bromide. One involves reacting rubidium hydroxide with hydrobromic acid:

1. RbOH + HBr → RbBr + H2O

Another method is to neutralize rubidium carbonate with hydrobromic acid:

1. Rb2CO3 + 2 HBr → 2 RbBr + H2O + CO2

References