Chemical elements
  Rubidium
    Isotopes
    Energy
    Production
    Application
    Physical Properties
    Chemical Properties
      Rubidium hydride
      Rubidium fluoride
      Rubidium chloride
      Rubidium bromide
      Rubidium iodide
      Rubidium chlorate
      Rubidium perchlorate
      Rubidium iodate
      Rubidium periodate
      Rubidium monoxide
      Rubidium peroxides
      Rubidium hydroxide
      Rubidium peroxide hydrate
      Rubidium sulphides
      Rubidium sulphate
      Rubidium hydrogen sulphate
      Rubidium persulphate
      Rubidium thiosulphate
      Rubidium dithionate
      Rubidium trithionate
      Rubidium tetrathionate
      Rubidium selenate
      Rubidium tellurates
      Rubidium nitride
      Rubidium hydrazoate
      Rubidium nitrite
      Rubidium nitrate
      Rubidium phosphide
      Rubidium phosphates
      Rubidium carbide
      Rubidium carbonate
      Rubidium hydrogen carbonate
      Rubidium percarbonate
      Rubidium pentaborate
    PDB 1dge-461d

Rubidium bromide, RbBr






The methods for the formation of the Rubidium bromide, RbBr, are similar to those employed for the production of rubidium chloride. The salt is colourless, crystallizes in cubes, and is stated to melt at 681° C. and 683° C., and to boil at 1350° C. The vapour- pressure in atmospheres is given by the expression

log p = -36980/4.57T+4.964.

Its density is given as 2.780, and also 3.210 at 23° C. Bromine is evolved at the melting-point, and is also displaced by the action of iodine. It dissolves in water much more freely than potassium bromide, the solubility at 16° C. being 105 grams in 100 grams of water. The heat of solution is -5.96 Cal. It forms polyhalides, such as RbBr3 and RbBr2I.


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