Rubidium bromide | |
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Rubidium bromide |
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Other names
Rubidium(I) bromide |
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Identifiers | |
CAS number | 7789-39-1 |
PubChem | 4670918 |
ChemSpider | 74217 |
Jmol-3D images | Image 1 |
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Properties | |
Molecular formula | RbBr |
Molar mass | 165.372 g/mol |
Appearance | white crystalline solid |
Density | 3.350 g/cm3 |
Melting point |
693 °C, 966 K, 1279 °F |
Boiling point |
1340 °C, 1613 K, 2444 °F |
Solubility in water | 98 g/100 mL |
Hazards | |
EU Index | Not listed |
Flash point | Non-flammable |
Related compounds | |
Other anions | Rubidium fluoride Rubidium chloride Rubidium iodide |
Other cations | Lithium bromide Sodium bromide Potassium bromide Caesium bromide |
(verify) (what is: / ?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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Infobox references |
Rubidium bromide is the bromide of rubidium. It has a NaCl crystal structure, with a lattice constant of 685 picometres. [1]
There are several methods for synthesising rubidium bromide. One involves reacting rubidium hydroxide with hydrobromic acid:
Another method is to neutralize rubidium carbonate with hydrobromic acid:
Rubidium metal would react directly with bromine to form RbBr, but this is not a sensible production method since rubidium metal is substantially more expensive than the carbonate or hydroxide; moreover, the reaction would be explosive.
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