Mercury - a binary inorganic compound, intermetallic potassium and mercury with the formula KHg, golden crystals.
| Mercury | |
|---|---|
| Are common | |
| Systematic name | Mercury |
| Traditional names | Potash; amalgam potassium |
| Chem. formula | Khg |
| Rat formula | Hgk |
| Physical properties | |
| condition | golden crystals |
| Molar mass | 239.69 g / mol |
| Density | 5.47 g / cm³ |
| Thermal properties | |
| T. decomp. | ≈140 ° C |
| Enthalpy of Education | -47.8 [1] kJ / mol |
Getting
- Fusion of stoichiometric amounts of pure substances in an inert atmosphere:
Physical Properties
Mercury forms golden crystals of triclinic syngony , space group P 1 , cell parameters a = 0.659 nm, b = 0.676 nm, c = 0.706 nm, α = 106.08 °, β = 101.87 °, γ = 92.78 °, Z = 4 [2] [3] [4] .
The compound melts congruently at a temperature of 180 ° C [2] .
Notes
- ↑ Anubhav Jain, S.-A. Seyed-Reihani, Christopher C. Fischer, David J. Couling, Gerbrand Ceder, William H. Green. Ab initio screening of metal sorbents for elemental mercury capture in syngas streams // Chemical Engineering Science. - 2010 .-- T. 65 . - S. 3025-3033 . - DOI : 10.1016 / j.ces.2010.01.01.024 .
- ↑ 1 2 State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Metallurgy, 1997 .-- T. 2 .-- 1024 p. - ISBN 5-217-01569-1 .
- ↑ B. Predel. Hg-K (Mercury-Potassium) // Landolt-Börnstein - Group IV Physical Chemistry. - 1997. - T. 5G . - S. 1-3 . - DOI : 10.1007 / 10506626_1621 .
- ↑ EJ Duwell, NC Baenziger. The crystal structures of KHg and KHg 2 // Acta Crystallographica. - 1955. - T. 8 , No. 11 . - S. 705-710 . - DOI : 10.1107 / S0365110X55002168 .