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Ammonium Molybdate Test

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by

Gabriel Manuel Yu

on 6 May 2016

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Transcript of Ammonium Molybdate Test

Group 5
Group 5
Ammonium Molybdate Test
Principle
When lipids containing phosphate groups in their structures are added to a strong acid solution, the lipid hydrolyses, producing free phosphate.
Positive Result
Members
Algarme
Dablo
Garde
Provida
Solano
Yu
Purpose of Test
To determine the presence of phosphate group
Purpose of Reagents
The purpose of the reagents is to break the bonds in order to reveal the free phosphate group
Reaction Involved
Group of Lipids
Identified
Phospholipids

Phospholipids are found in high concentrations in the lining of practically every cell of the body, including brain cells. They help brain cells communicate and influence how well receptors function.
Compound Responsible
The precipitation is usually used to identify phosphate. The precipitation is the formation of yellow ammonium molybdophosphate from ammonium molybdate in acidic solution.
The compound responsible for the observation is Phosphate.
Performed by: Group 5
Performed on: May 5, 2016
When a solution containing phosphate ions is heated with a solution of ammonium molybdate [(NH4)2MoO4] and dilute nitric acid a bright yellow precipitate of ammonium phosphomolybdate
[(NH4)3PO4 • 12MoO4] is formed. The yellow precipitate is extremely insoluble in nitric acid.
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