Question

P→Ca3P2→PH3→P2O5→H3P4→Ca3(PO4)→P2O5

Answer 1

P->Ca3P2->PH3->P2O5->H3PO4->Ca3(PO4)2->P2O5

3 Ca+2 P = Ca3P2

Ca3P2+ 6 H2O = 3 Ca(OH)2+2 PH3

2 PH3+ 4 O2 = P2O5+3 H2O

P2O5+ 3 H2O = 2 H3PO4

2 H3PO4 + 3 CaO = Ca3(PO4)2 + 3 H2O

Ca3(PO4)2 + 3 H2O = P2O5 + 3 Ca(OH)2

Answer 2

It seems like you have provided a sequence of chemical reactions involving different phosphorus compounds. Let's break down each reaction step by step:

1. P → Ca3P2: In this reaction, elemental phosphorus (P) reacts with calcium (Ca) to form calcium phosphide (Ca3P2).

2. Ca3P2 → PH3: Calcium phosphide (Ca3P2) reacts to produce phosphine gas (PH3).

3. PH3 → P2O5: Phosphine gas (PH3) undergoes a reaction to form phosphorus pentoxide (P2O5).

4. P2O5 → H3P4: Phosphorus pentoxide (P2O5) reacts to produce tetraphosphorus hexoxide (H3P4).

5. H3P4 → Ca3(PO4): Tetraphosphorus hexoxide (H3P4) reacts with calcium (Ca) to form calcium phosphate (Ca3(PO4)).

6. Ca3(PO4) → P2O5: Calcium phosphate (Ca3(PO4)) reacts to produce phosphorus pentoxide (P2O5).

In summary, the overall sequence of reactions is as follows: P → Ca3P2 → PH3 → P2O5 → H3P4 → Ca3(PO4) → P2O5.

Please note that chemical reactions are subject to specific conditions, and the stoichiometry may vary depending on the reaction conditions and reactant proportions. The provided reactions represent a simplified theoretical sequence of reactions involving phosphorus compounds and calcium.