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Rubidium perchlorate, RbClO4, is the perchlorate of rubidium. It is an oxidizing agent, as are all perchlorates.
Preparation and properties
Rubidium perchlorate can be obtained through the careful heating of a rubidium chlorate solution, leading to a disproportionation reaction with the release of oxygen gas:[3]
- 2 RbClO3 → RbClO4 + RbCl + O2
When heated, it decomposes into the chloride and oxygen:[4]
- RbClO4 → RbCl + 2 O2
It has two polymorphs. Below 279 °C, it crystallizes in orthorhombic crystal system with lattice constants a = 0.927 nm, b = 0.581 nm, c = 0.753 nm. Over 279 °C, it has a cubic structure with lattice constant a = 0.770 nm.[1]
Table of solubility in water:[1]
| Temperature (°C) | 0 | 8.5 | 14 | 20 | 25 | 50 | 70 | 99 |
|---|---|---|---|---|---|---|---|---|
| Solubility (g / 100 ml) | 1.09 | 0.59 | 0.767 | 0.999 | 1.30 | 3.442 | 6.72 | 17.39 |
References
- ^ a b c F. Brezina, J. Mollin, R. Pastorek, Z. Sindelar. Chemicke tabulky anorganickych sloucenin (Chemical tables of inorganic compounds). SNTL, 1986.
- ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 1138561630.
- ^ Abegg, R.; Auerbach, F. (1908). Handbuch der anorganischen Chemie. Vol. 2. S. Hirzel. p. 431.
- ^ d' Ans, Jean; Lax, Ellen (1997). Taschenbuch für Chemiker und Physiker. 3. Elemente, anorganische Verbindungen und Materialien, Minerale. Vol. 3 (4th ed.). Berlin: Springer. p. 686. ISBN 3-540-60035-3. OCLC 312750698.
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