Method for detection of elements - phosphorus, Chemistry

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Method for Detection of Elements - Phosphorus

Phosphorus is detected through fusing the organic compound along with sodium peroxide while phosphorus is converted into sodium phosphate. 2P + 5Na₂O₂→2Na₃PO₄ +2Na₂O. The fused mass is extracted with H₂O, boiled with conc. HNO₃ and after that ammonium molybdate is included. Presence of yellow ppt. or colouration because of the formation of ammonium phosphomolybdate points out the presence of phosphorus.

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