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In aqueous solution, sodium molybdate features dissociated sodium ions and tetrahedral molybdate (MoO 4 2-), which adopts a sulfate-like structure. The solid dihydrate material has a complex structure typical for alkali metal salts of oxyanions.
Molybdate (usually in the form of potassium molybdate) is also used in the analytical colorimetric testing for the concentration of silica in solution, called the molybdenum blue method. [21] Additionally, it is used in the colorimetric analysis of phosphate concentration in association with the dye malachite green .
The Hoagland solution is a hydroponic nutrient solution that was newly developed by Hoagland and Snyder in 1933, [1] modified by Hoagland and Arnon in 1938, [2] and revised by Arnon in 1950. [3] It is one of the most popular standard solution compositions for growing plants , in the scientific world at least, with more than 21,000 citations ...
Boil a solution of 20 g ammonium molybdate and 5 g of sodium thiosulfate in a liter of water, immerse the objects, rinse, dry, wax or lacquer after the development of color. [31] Lustre colours. Use a solution of 280 g of sodium thiosulphate, 25 g of cupric acetate and 30 g of citric acid. It can be used on copper and its alloys, silver, nickel ...
In acidified aqueous solutions of molybdic acid, the complex MoO 3 (H 2 O) 3 is observed. Once again, molybdenum adopts octahedral molecular geometry, probably with three oxo ligands and three aquo ligands. [5] The salts of molybdic acid are called molybdates. They arise by adding base to solutions of molybdic acid.
Ammonium heptamolybdate is the inorganic compound whose chemical formula is (NH 4) 6 Mo 7 O 24, normally encountered as the tetrahydrate.A dihydrate is also known. It is a colorless solid, often referred to as ammonium paramolybdate or simply as ammonium molybdate, although "ammonium molybdate" can also refer to ammonium orthomolybdate, (NH 4) 2 MoO 4, and several other compounds.
The Folin–Wu method [13] uses a reagent that contains sodium tungstate. The exact nature of the blue complex in this procedure is not known. The Somogyi-Nelson method uses an arsenomolybdate complex formed by the reaction of ammonium molybdate, (NH 4) 6 Mo 7 O 24, with sodium arsenate, Na 2 HAsO 7. [14] [15] [16]
Sodium molybdate; Z. Zinc molybdate This page was last edited on 1 November 2023, at 18:23 (UTC). Text is available under the Creative Commons Attribution-ShareAlike ...