Question

Напишите уравнения реакций,при помощи которых,используя простые вещества Ca,P,O,можно получить фосфат Ca

Answer 1

4P + 5O₂  =   2 P₂O₅
2Ca + O₂  = 2CaO
3CaO + P₂O₅  = Ca₃ (PO₄)₂

Answer 2

Formation of Calcium Phosphate (Ca3(PO4)2)

To form calcium phosphate (Ca3(PO4)2) using simple substances Ca, P, and O, we can write the following equations:

1. Formation of Calcium Phosphide (Ca3P2) - The reaction to form calcium phosphide involves the combination of calcium and phosphorus. - The balanced chemical equation for this reaction is: ``` 3Ca + 2P -> Ca3P2 ``` - This reaction is represented in the source

2. Formation of Phosphine (PH3) - Calcium phosphide reacts with water to produce phosphine gas. - The balanced chemical equation for this reaction is: ``` Ca3P2 + 6H2O -> 3Ca(OH)2 + 2PH3 ``` - This reaction is represented in the source

3. Formation of Phosphorus Pentoxide (P2O5) - Phosphine gas reacts with oxygen to form phosphorus pentoxide. - The balanced chemical equation for this reaction is: ``` 4PH3 + 5O2 -> P2O5 + 6H2O ``` - This reaction is not directly provided in the search results, but it is a well-known chemical reaction.

4. Formation of Calcium Phosphate (Ca3(PO4)2) - Phosphorus pentoxide reacts with water and calcium hydroxide to produce calcium phosphate. - The balanced chemical equation for this reaction is: ``` P2O5 + 3H2O + 2Ca(OH)2 -> 2Ca3(PO4)2 + 4H2O ``` - This reaction is represented in the source

These reactions demonstrate the formation of calcium phosphate (Ca3(PO4)2) using simple substances Ca, P, and O.