Ammonium selenate is a chemical compound with the chemical formula (NH4)2O4Se.[1][2]

Synthesis

Synthesis is via a reaction of selenic acid with an excess of ammonium hydroxide.[3]

It may also be formed by the effect of an ammonia solution on a solution of selenic acid:

2NH3 + H2SeO4 → (NH4)2SeO4

Physical properties

Ammonium selenate forms white crystals of monoclinic system, spatial group C2/m, cell parameters a = 12.152, b = 6.418, c = 7.711, β = 115.5° Z = 4 and density 2.190 Mgm−3.[4]

It is easily soluble in water.[5] Soluble in EtOH and acetone.[6]

References

  1. ^ "Ammonium selenate". NIST. Retrieved 4 February 2025.
  2. ^ Specific Gravities, Boiling Points, and Melting Points: First Supplement to Part I. Smithsonian Institution. 1876. p. 18. Retrieved 4 February 2025.
  3. ^ Satya, Prakash (2013). Advanced Chemistry of Rare Elements. S. Chand Publishing. p. 300. ISBN 978-81-219-4254-6. Retrieved 4 February 2025.
  4. ^ Carter, R. L.; Koerntgen, C.; Margulis, T. N. (15 February 1977). "Ammonium selenate". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 33 (2): 592–593. doi:10.1107/S0567740877004208. ISSN 0567-7408. Retrieved 4 February 2025.
  5. ^ Comey, Arthur Messenger (1896). A Dictionary of Chemical Solubilities Inorganic: xx, 515 p. Macmillan & Company. p. 351. Retrieved 4 February 2025.
  6. ^ "MatWeb - The Online Materials Information Resource". matweb.com. Retrieved 4 February 2025.
Allikas: http://en.wikipedia.org/wiki/Ammonium_selenate
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