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Answer the following with complete solution. 1. A sample of phosphate detergent weighing 0.6637 g was...

Answer the following with complete solution.

1. A sample of phosphate detergent weighing 0.6637 g was dissolved in water and titrated with 0.1216 M according to the reaction.

PO4-3 + 2HCl --------> H2PO4- + Cl-

The Endpoint was observed after the addition of 28.33 mL of the HCl titrant. Calculate the amount of Phosphorus present as % PO4-3 and % P2O5.

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