What are heteropoly blues?
Heteropoly-molybdenum blues , can accept more electrons (i.e. be reduced) to form an intensely coloured mixed-valence complex. This can occur in one electron or two electron steps. The reduction process is reversible and the structure of the anion is essentially unchanged.
What is Molybdenum Blue Method for Determination of phosphate?
The amount of phosphate is determined by molybdenum blue phosphorus method in conjugation with UV-visible spectrophotometer. This method is based on the formation of phosphomolybdate complex with the added molybdate followed by the reduction of the complex with hydrazine hydrate in aqueous sulphuric acid medium.
What is the chemical formula of molybdenum blue?
Molybdenum Blue
| PubChem CID | 170447 |
|---|---|
| Molecular Formula | H2MoO2-2 |
| Synonyms | Molybdenum Blue molybdenum;oxygen(2-);hydrate 40957-85-5 Molybdenum oxide (Mo(5)O(14)) monohydrate |
| Molecular Weight | 129.96 |
| Component Compounds | CID 23932 (Molybdenum) CID 190217 (Oxide) CID 962 (Water) |
What is Isopoly and heteropoly acids?
In other words, isopoly acids contain only one metal along with hydrogen and oxygen while heteropoly acids contain two elements other than hydrogen and oxygen. The corresponding salts of isopoly and heteropoly acids are called as isopoly and heteropoly salts, respectively.
Why is molybdenum blue blue?
The reaction involves the formation of a polyoxometallate species, a heteropoly acid, from orthophosphate and molybdate under acidic conditions, which is then reduced to form an intensely coloured phosphomolybdenum blue (PMB) species.
What is the formula of ammonium phosphomolybdate?
(NH4)3PMo12O40Ammonium phosphomolybdate / Formula
What Colour is molybdenum?
silvery-grey
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 Isopoly and heteropoly anions?
The key difference between isopoly and heteropoly acids is that isopoly acids form from the combination of similar acids or anions whereas heteropoly acids form from the combination of different acids or anions. Therefore, isopoly acids have the same repeating unit but heteropoly acids have different repeating units.