1. A 0.3516 g sample of commercial phosphate detergent was ignited at a heat to destroy the organicmatter. The residue was taken up in hot HCI which converted P to H3PO4. The phosphate was precipitatedas MGNH4PO4.6H2O by addition of Mg+ followed by aqueous NH3. After being filtered and washed, theprecipitate was converted to Mg2P2O7 by ignition at 1000 OC. This residue weighed 0.2161 g. Calculate thepercent P (30.974) in the sample? Ans 17.11%

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1. A 0.3516 g sample of commercial phosphate detergent was ignited at a heat to destroy the organic matter. The residue was taken up in hot HCI which converted P to H3PO4. The phosphate was precipitated as MGNH.PO4.6H2O by addition of Mg followed by aqueous NH3. After being filtered and washed, the precipitate was converted to Mg P2O7 by ignition at 1000 OC. This residue weighed 0.2161 g. Calculate the percent P (30.974) in the sample? Ans 17.11%

1. A 0.3516 g sample of commercial phosphate detergent was ignited at a heat to destroy the organic matter. The residue was taken up in hot HCI which converted P to H3PO4. The phosphate was precipitated as MGNH.PO4.6H2O by addition of Mg followed by aqueous NH3. After being filtered and washed, the precipitate was converted to Mg P2O7 by ignition at 1000 OC. This residue weighed 0.2161 g. Calculate the percent P (30.974) in the sample? Ans 17.11%

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter16: Applications Of Neutralization Titrations

Section: Chapter Questions

Problem 16.20QAP

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