16. (4 pts) To produce food-grade phosphoric acid requires two steps. The first is a reaction of phosphorus with oxygen to produce gaseous diphosphorus pentoxide. The second step involves reacting the gaseous diphosphorus pentoxide with water to produce phosphoric acid. Reaction 1 Reaction 2 P4 (l) +502 (g) 2 P2O5 (g) P2O5 (g) +3 H2O (l) 2 H3PO4 (1) Based on reaction 1, if 450.0 g of P4 reacts with 80.0 g of O2, what is the limiting reagent? b. If the overall reaction actually produces 160.2 g of H3PO4, what is the percent yield? Hint: Work through the first reaction to find how much P2O5 is theoretically produced, THEN move on to the second reaction to find how much H3PO4 is produced.