Is barium chloride in water endothermic or exothermic?

When barium chloride (BaCl₂) is dissolved in water, the process is endothermic. This means that it absorbs heat from the surroundings, resulting in a decrease in the temperature of the solution. The dissolution of barium chloride requires energy to break the ionic bonds, and this energy is greater than the heat released during the hydration of the ions.