Make an equation: P → CaHPO4 → Ca (H2PO4) 2 → Ca3 (PO4) 2 → P → PH3
| February 23, 2021 | education
We are given a chain of reactions. Let’s write down each reaction. The reaction chain will consist of four stages, as given to us in the condition:
1) 4P + 5O2 = 2P2O5; P2O5 + Ca (OH) 2 + H2O = Ca (H2PO4) 2;
2) Ca (H2PO4) 2 + 2Ca (OH) 2 = Ca3 (PO4) 2 + 2H2O;
3) Ca3 (PO4) 2 + 5C + 3SiO2 = 3CaSiO3 + 2P + 5CO;
4) 4P + 3KOH + 3H2O = 3KH2PO2 + PH3.
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