Question

P-P2O5-H3PO4-K3PO4-ALPO4 Осуществите следующие превращения

Answer 1

4P + 5O2 --> 2P2O5
P2O5 + 3H2O --> 2H3PO4
H3PO4 + 3KOH --> K3PO4 + 3H2O
K3PO4 + AlCl3 --> AlPO4 + 3KCl

Answer 2

Transformation of Compounds

To carry out the following transformations: - P -> P2O5 - P2O5 -> H3PO4 - H3PO4 -> K3PO4 - K3PO4 -> AlPO4

We can use the following chemical reactions and transformations:

1. P -> P2O5: - The transformation of P to P2O5 can be achieved through the combustion of phosphorus in the presence of excess oxygen. - The balanced chemical equation for this reaction is: ``` 4 P + 5 O2 -> P4O10 ``` - This reaction results in the formation of tetraphosphorus decoxide (P4O10), also known as phosphorus pentoxide (P2O5).

2. P2O5 -> H3PO4: - The conversion of P2O5 to H3PO4 involves the reaction of phosphorus pentoxide with water. - The balanced chemical equation for this reaction is: ``` P2O5 + 3 H2O -> 2 H3PO4 ``` - This reaction yields orthophosphoric acid (H3PO4).

3. H3PO4 -> K3PO4: - The transformation of H3PO4 to K3PO4 can be achieved through a neutralization reaction with a base such as potassium hydroxide (KOH). - The balanced chemical equation for this reaction is: ``` 3 H3PO4 + 3 KOH -> K3PO4 + 3 H2O ``` - This reaction results in the formation of potassium phosphate (K3PO4).

4. K3PO4 -> AlPO4: - The conversion of K3PO4 to AlPO4 involves a metathesis reaction with aluminum chloride (AlCl3). - The balanced chemical equation for this reaction is: ``` 3 K3PO4 + 2 AlCl3 -> 2 AlPO4 + 6 KCl ``` - This reaction yields aluminum phosphate (AlPO4).

By following these chemical reactions, the desired transformations of the compounds can be achieved.