A sample of phosphate detergent weighing 0.6637 g was dissolved in water and titrated with 0.1216 M HCl according to the reaction
PO4^3- + 2HCI --> H3PO4^- + 2CI^-
The endpoint was observed after the addition of 28.33 mL of the HCI titrant, calculate the amount of phosphorus present as % PO4^-3 and % P2O5.
PO4^3- + 2HCI --> H3PO4^- + 2CI^-
The endpoint was observed after the addition of 28.33 mL of the HCI titrant, calculate the amount of phosphorus present as % PO4^-3 and % P2O5.