96. Phosphorus (P4) is commercially prepared by heating a mixture of calcium phosphate (Ca3(PO4)2), sand (SiO₂), and coke (C) in an electric furnace. The process involves
two reactions.
2Ca3(PO4)2(s) + 6SiO₂ (s)→ 6CaSiO3 (1) + P4O10(g)
P4010(g) +10C(s) → P4(g) + 10CO(g)
The P40 10 produced in the first reaction reacts with an excess of coke (C) in the second reaction. Determine the theoretical yield of P4 if 250.0 g of Ca3(PO4)2 and 400.0 g of SiO₂ are heated. If the actual yield of P4 is 45.0 g,
determine the percent yield of P4.
