Strontium bromide
Strontium bromide is an inorganic compound with formula SrBr2.
- 1Names
- 2Formulae and structures
- 3Properties
- 4Constituents
- 5Thermodynamic properties
- 6Solubility
- 7Preparations
- 8Chemical reactions
- 9References
- 10Related substances
- 11Related categories
Names
List of substance names
- Typical name
- Strontium bromide
- Compositional nomenclature
- Strontium bromide
- Strontium dibromide
Formulae and structures
List of formulae
- Typical formula
- SrBr2
- Compositional formula
- SrBr2
- Structural formula
- Lewis structure
- Colored Lewis structure
Properties
List of substance properties
Constituents
Constituent ions
| Ion | Name | Charge number | Number |
|---|---|---|---|
| Sr2+ | Strontium ion | 2 | 1 |
| Br− | Bromide ion | -1 | 2 |
Constituent atoms
| Atom | Name | Oxidation state | Number |
|---|---|---|---|
| Sr | Strontium | +2 | 1 |
| Br | Bromine | −1 | 2 |
Ratio of atoms
| Atom | Atomic weight | Number | Atomic ratio | Weight ratio |
|---|---|---|---|---|
| Sr | 87.62 | 1 | 33.33% | 35.41% |
| Br | 79.904 | 2 | 66.67% | 64.59% |
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 | −717.6[3] | −697.1[3] | 135.10[3] | 75.35[3] |
| Gas | −410.[3] | −444.[3] | 323.5[3] | 60.7[3] |
| Ionized aqueous solution | −788.89[3] | −767.39[3] | 132.2[3] | – |
| Crystalline solid 1 hydrate | −1031.4[3] | −954.3[3] | 180.[3] | 120.9[3] |
| Crystalline solid 6 hydrate | −2531.3[3] | −2174.1[3] | 406.[3] | 343.5[3] |
Solubility
Qualitative solubility
Solubility in water (g/100 g)[1]
| 0°C | 10°C | 20°C | 30°C | 40°C | 60°C | 80°C | 100°C |
|---|---|---|---|---|---|---|---|
| 85.2 | 93.4 | 102 | 112 | 123 | 150 | 182 | 223 |
Solubility in water (g/100 g)[4]
| 0°C | 10°C | 20°C | 25°C | 30°C | 40°C | 50°C | 60°C | 80°C | 100°C |
|---|---|---|---|---|---|---|---|---|---|
| 85.2 | 93 | 102.4 | 107 | 111.9 | 123.2 | 135.8 | 150 | 181.8 | 222.5 |
Solubility in ethanol (g/100 g)[4]
| 0°C |
|---|
| 64.5 |
Solubility curve (g/100 g)
Preparations
Reaction of metal and nonmetal
The reaction of and yields strontium bromide.
Reaction of acid and base
The reaction of hydrogen bromide and strontium hydroxide yields strontium bromide and water.
Reaction of basic oxide and acid
The reaction of strontium oxide and hydrogen bromide yields strontium bromide and water.
Reaction of salt of weak acid and strong acid
The reaction of salt of weak acid and strong acid can yield strontium bromide.
Reaction of salt of weak base and strong base
The reaction of salt of weak base and strong base can yield strontium bromide.
Reaction of active metal and acid
The reaction of and hydrogen bromide yields strontium bromide and .
Chemical reactions
Electrolytic dissociation
Electrolytic dissociation of strontium bromide yields strontium ion and bromide ion.
Reaction with nonvolatile acid
The reaction of strontium bromide and nonvolatile acid yields salt of non volatile acid and hydrogen bromide.
Reaction with reducing species
The reaction of and strontium bromide yields sodium bromide and .
Reaction with oxidizing species
The reaction of strontium bromide and oxidizing species yields a variety of products.
Reaction with oxidizing species under acidic condition
The reaction of strontium bromide, oxidizing species, and hydrogen ion yields a variety of products.
Reaction with oxidizing species under neutral condition
The reaction of strontium bromide, oxidizing species, and water yields a variety of products.
Precipitation reaction
When a certain chemical species is present in aqueous solution, it reacts with strontium bromide to form a precipitate.
Electrolysis of aqueous solution
Electrolysis of aqueous strontium bromide yields a variety of products.
Molten salt electrolysis
Molten salt electrolysis of strontium bromide yields and .
References
List of references
- 1James G. Speight (2017)Lange's Handbook of Chemistry, 17th editionMcGraw Hill Education
- ^ Density, 4.216 g/cm3 - p.66
- ^ Melting point, 657 °C - p.66
- ^ Boiling point, 2045 °C - p.66
- ^ Enthalpy of fusion, 10.1 kJ · mol−1 - p.310
- ^ Enthalpy of vaporization, 194.1 kJ · mol−1 - p.310
- ^ Enthalpy of vaporization at 25°C, 310 kJ · mol−1 - p.310
- ^ Enthalpy of other transition, 12.2 kJ · mol−1 - p.310
- ^ Solubility in Water (g/100 g), See the table - p.344
- 2John R. Rumble Jr, David R. Lide, Thomas J. Bruno (2019)CRC Handbook of Chemistry and Physics 100th EditionCRC Press
- ^ Enthalpy of fusion, 10.5 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)
- ^ ΔfH°, -717.6 kJ · mol−1
- ^ ΔfG°, -697.1 kJ · mol−1
- ^ S°, 135.10 J · K−1 · mol−1
- ^ Cp°, 75.35 J · K−1 · mol−1
- ^ ΔfH°, -410. kJ · mol−1
- ^ ΔfG°, -444. kJ · mol−1
- ^ S°, 323.5 J · K−1 · mol−1
- ^ Cp°, 60.7 J · K−1 · mol−1
- ^ ΔfH°, -788.89 kJ · mol−1
- ^ ΔfG°, -767.39 kJ · mol−1
- ^ S°, 132.2 J · K−1 · mol−1
- ^ ΔfH°, -1031.4 kJ · mol−1
- ^ ΔfG°, -954.3 kJ · mol−1
- ^ S°, 180. J · K−1 · mol−1
- ^ Cp°, 120.9 J · K−1 · mol−1
- ^ ΔfH°, -2531.3 kJ · mol−1
- ^ ΔfG°, -2174.1 kJ · mol−1
- ^ S°, 406. J · K−1 · mol−1
- ^ Cp°, 343.5 J · K−1 · mol−1
- 4Atherton Seidell (1919)Solubilities of Inorganic and Organic Compounds: A Compilation of Quantitative Solubility Data From the Periodical LiteratureD. Van Nostrand Company
