What is molybdic acid used for?
What is molybdic acid used for?
Molybdic Acid is the hydrated forms of molybdenum trioxide. It is used for the determination of phosphorus or phosphate and lead. It is also used in glazes for ceramics, in manufacturing of Rock Phosphate based Fertilizers, Pigments, Dyes, Colors etc.
How do you dissolve molybdic acid?
Dissolve 1.0 g in 4 mL of ammonium hydroxide, heat on a hot plate (~100 °C) until completely dissolved, and evaporate to dryness. Dissolve the residue in 20 mL of water, add 4 mL of nitric acid, and dilute with water to 30 mL.
What is the molybdenum blue method?
Molybdenum blue is a term applied to: reduced heteropolymolybdate complexes, polyoxometalates containing Mo(V), Mo(VI), and a hetero atom such as phosphorus or silicon. reduced isopolymolybdate complexes, polyoxometalates containing Mo(V), Mo(VI) formed when solutions of Mo(VI) are reduced.
What is heteropoly blue?
Abstract. Polyoxotungstate, -molybdate and -vanadate anions in which the metal atoms occupy sites of approximately C4V symmetry with one terminal oxygen each, are reducible in reversible one- or two-electron steps to mixed-valence polyanions (heteropoly blues).
Is molybdic acid soluble in water?
Molybdic acid refers to hydrated forms of molybdenum trioxide and related species….Molybdic acid.
| Names | |
|---|---|
| Molar mass | 161.95 g mol−1 |
| Density | 3.1 g cm−3 |
| Melting point | 300 °C (572 °F; 573 K) |
| Solubility in water | 1510 mg dm−3 Soluble in 10% ammonia 35gm/lt |
What Colour is molybdenum?
Physical properties. In its pure form, molybdenum is a silvery-grey metal with a Mohs hardness of 5.5 and a standard atomic weight of 95.95 g/mol.
What is a Keggin unit?
2 The Keggin unit is the primary structure of the heteropoly acids and contains 12 transition metal atoms normally of tungsten or molybdenum, a central atom (usually phosphorus or silicon), and four types of oxygen atoms: central oxygens, terminal oxygens, and two types of bridging oxygens [ 3 ] Source publication.
Is Phosphate an element?
Phosphates are the naturally occurring form of the element phosphorus, found in many phosphate minerals. In mineralogy and geology, phosphate refers to a rock or ore containing phosphate ions.
