Question

P → P205→ H3PO4Ca3 (PO4)2​

Answer 1

Ответ:

2P+3O2=P2O5

P2O5+3H2O=3H3PO4

2H3PO4+2Ca=Ca2(PO4)2+3H2 вроде так!

Answer 2

The sequence you provided appears to represent a chemical reaction pathway involving the transformation of phosphorus (P) to phosphoric acid (H3PO4) and then to calcium phosphate (Ca3(PO4)2). Let's break down each step of the reaction:

1. P → P2O5: This represents the oxidation of phosphorus (P) to phosphorus pentoxide (P2O5). This reaction typically occurs by burning phosphorus in the presence of excess oxygen.

2. P2O5 + 3H2O → 2H3PO4: Phosphorus pentoxide (P2O5) reacts with water (H2O) to form phosphoric acid (H3PO4). This reaction is exothermic and produces two molecules of phosphoric acid for every molecule of P2O5 consumed.

3. 2H3PO4 + 3Ca(OH)2 → Ca3(PO4)2 + 6H2O: In this step, phosphoric acid (H3PO4) reacts with calcium hydroxide (Ca(OH)2) to produce calcium phosphate (Ca3(PO4)2) and water (H2O). This reaction is a neutralization reaction where the acidic H3PO4 reacts with the basic Ca(OH)2 to form a salt, Ca3(PO4)2, and water.

Overall, the sequence represents the conversion of phosphorus (P) to phosphoric acid (H3PO4), and then the reaction of phosphoric acid with calcium hydroxide to form calcium phosphate.