Rubidium fluoride
Rubidium fluoride is an inorganic compound with formula RbF.
- 1Names
- 2Formulae and structures
- 3Properties
- 4Constituents
- 5Thermodynamic properties
- 6Solubility
- 7Preparations
- 8Chemical reactions
- 9References
- 10Related substances
- 11Related categories
Names
List of substance names
- Typical name
- Rubidium fluoride
- Compositional nomenclature
- Rubidium fluoride
Formulae and structures
List of formulae
- Typical formula
- RbF
- Compositional formula
- RbF
- Structural formula
- Lewis structure
- Colored Lewis structure
Properties
List of substance properties
Constituents
Constituent ions
| Ion | Name | Charge number | Number |
|---|---|---|---|
| Rb+ | Rubidium ion | 1 | 1 |
| F− | Fluoride ion | -1 | 1 |
Constituent atoms
| Atom | Name | Oxidation state | Number |
|---|---|---|---|
| Rb | Rubidium | +1 | 1 |
| F | Fluorine | −1 | 1 |
Ratio of atoms
| Atom | Atomic weight | Number | Atomic ratio | Weight ratio |
|---|---|---|---|---|
| Rb | 85.4678 | 1 | 50.00% | 81.81% |
| F | 18.998 | 1 | 50.00% | 18.19% |
Thermodynamic properties
Phase transition properties
Standard thermodynamic properties
State | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
|---|---|---|---|---|
| Crystalline solid | −557.7[3] | – | – | – |
| Gas | −331.4[3] | −349.0[3] | 237.09[3] | 35.69[3] |
| Ionized aqueous solution | −583.79[3] | −562.77[3] | 107.5[3] | – |
| Crystalline solid 1.5 hydrate | −1013.8[3] | – | – | – |
Solubility
Qualitative solubility
Solubility in water (g/100 g)[1]
| 18°C |
|---|
| 131 |
Solubility in water (g/100 g, 1.5 hydrate)[4]
| 18°C |
|---|
| 130.6 |
Solubility curve (g/100 g)
Preparations
Reaction of metal and nonmetal
The reaction of and yields rubidium fluoride.
Reaction of acid and base
The reaction of hydrogen fluoride and rubidium hydroxide yields rubidium fluoride and water.
Reaction of basic oxide and acid
The reaction of rubidium oxide and hydrogen fluoride yields rubidium fluoride and water.
Reaction of salt of weak base and strong base
The reaction of salt of weak base and strong base can yield rubidium fluoride.
Reaction of active metal and acid
The reaction of and hydrogen fluoride yields rubidium fluoride and .
Chemical reactions
Electrolytic dissociation
Electrolytic dissociation of rubidium fluoride yields rubidium ion and fluoride ion.
Reaction with strong acid
The reaction of rubidium fluoride and strong acid yields salt of strong acid and hydrogen fluoride.
Reaction with nonvolatile acid
The reaction of rubidium fluoride and nonvolatile acid yields salt of non volatile acid and hydrogen fluoride.
Reaction with reducing species
The reaction of and rubidium fluoride yields sodium fluoride and .
Precipitation reaction
When a certain chemical species is present in aqueous solution, it reacts with rubidium fluoride to form a precipitate.
Electrolysis of aqueous solution
Electrolysis of aqueous rubidium fluoride yields a variety of products.
Molten salt electrolysis
Molten salt electrolysis of rubidium fluoride yields and .
References
List of references
- 1James G. Speight (2017)Lange's Handbook of Chemistry, 17th editionMcGraw Hill Education
- 2John R. Rumble Jr, David R. Lide, Thomas J. Bruno (2019)CRC Handbook of Chemistry and Physics 100th EditionCRC Press
- ^ Melting point, 795 °C - p.6-160
- ^ Enthalpy of fusion, 25.8 kJ · mol−1 - p.6-160
- 3Janiel J. Reed (1989)The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI UnitsNational Institute of Standards and Technology (NIST)
- 4Atherton Seidell (1919)Solubilities of Inorganic and Organic Compounds: A Compilation of Quantitative Solubility Data From the Periodical LiteratureD. Van Nostrand Company
