Question

P ---> p2o5 -->h3po4 --> kh2po4 --> k2hpo4 --> k3po4   

Answer 1

1)4p+5O2=2P2O5

2)P2O5+3H2O=2H3PO4

3)H3PO4+KOH=KH2PO4+H2O

4)честно не знаю

Answer 2

It looks like you've provided a series of chemical reactions involving phosphorus (P) and various compounds. Let me break down the reactions step by step:

1. P (Phosphorus) reacts with oxygen (O2) to form P2O5 (Diphosphorus pentoxide): P + 5O2 -> P2O5

2. P2O5 reacts with water (H2O) to form H3PO4 (Phosphoric acid): P2O5 + 3H2O -> 2H3PO4

3. H3PO4 (Phosphoric acid) reacts with potassium hydroxide (KOH) to form KH2PO4 (Monopotassium phosphate): H3PO4 + KOH -> KH2PO4 + H2O

4. KH2PO4 (Monopotassium phosphate) reacts with potassium hydroxide (KOH) again to form K2HPO4 (Dipotassium phosphate): KH2PO4 + KOH -> K2HPO4 + H2O

5. K2HPO4 (Dipotassium phosphate) reacts with potassium hydroxide (KOH) once more to form K3PO4 (Tripotassium phosphate): K2HPO4 + KOH -> K3PO4 + H2O

So, the overall reaction sequence you've provided involves the conversion of elemental phosphorus (P) into tripotassium phosphate (K3PO4) through a series of chemical reactions. Each step in the sequence represents a different reaction involving phosphorus and other compounds to produce the next compound in the chain.

Answer 3

It seems like you're describing a series of chemical reactions involving different compounds. Here's a breakdown of the reactions you've provided:

1. P → P2O5: This appears to be the conversion of elemental phosphorus (P) to phosphorus pentoxide (P2O5). This reaction often involves the combustion of phosphorus in the presence of oxygen to produce P2O5.

2. P2O5 → H3PO4: This is the reaction where phosphorus pentoxide (P2O5) reacts with water (H2O) to produce phosphoric acid (H3PO4).

3. H3PO4 → KH2PO4: This reaction suggests the neutralization of phosphoric acid (H3PO4) with potassium hydroxide (KOH) to form potassium dihydrogen phosphate (KH2PO4).

4. KH2PO4 → K2HPO4: It seems like another neutralization reaction where potassium dihydrogen phosphate (KH2PO4) reacts with potassium hydroxide (KOH) to yield dipotassium hydrogen phosphate (K2HPO4).

5. K2HPO4 → K3PO4: This is likely the final step, where dipotassium hydrogen phosphate (K2HPO4) reacts with another equivalent of potassium hydroxide (KOH) to form tripotassium phosphate (K3PO4).

In summary, this sequence of reactions starts with elemental phosphorus (P) and proceeds through various chemical transformations to produce tripotassium phosphate (K3PO4). These reactions involve both oxidation and neutralization processes.