Lanthanum (III) selenate is an inorganic compound, a metal salt of lanthanum and selenic acid with the formula La 2 (SeO 4 ) 3 , colorless crystals, soluble in water, form crystalline hydrates .
| Lanthanum Selenate | |
|---|---|
| Are common | |
| Systematic name | Lanthanum Selenate (III) |
| Traditional names | Lanthanum selenate |
| Chem. formula | La 2 (SeO 4 ) 3 |
| Physical properties | |
| condition | colorless crystals |
| Molar mass | 706.68 g / mol |
| Chemical properties | |
| Solubility in water | 50.5 0 ; 45 20 ; 2.2 90 g / 100 ml |
| Classification | |
| ChemSpider | |
Getting
- Dissolution of lanthanum oxide , hydroxide or carbonate in selenium acid solution:
Physical Properties
Lanthanum (III) selenate forms colorless (white) crystals.
It is well dissolved in cold water.
It forms crystalline hydrates of the composition La 2 (SeO 4 ) 3 • n H 2 O, where n = 5, 6, 10 and 12. The most stable is La 2 (SeO 4 ) 3 • 5H 2 O.
Crystalline hydrate of the composition La 2 (SeO 4 ) 3 • 12H 2 O — monoclinic syngony crystals, space group C 2 / c , cell parameters a = 1.0670 nm, b = 2.0390 nm, c = 1.0740 nm, β = 110.12 °.
Literature
- Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.