Question

Phosphorus combine with oxygen

Answer 1

dear ...what u want to know..when phosphorus combine wit oxygen..ask the question..

Answer 2

There are two forms of allotropes of phosphorus, white phosphorus and red phosphorus. Red phosphorus is less reactive than white phosphorus. Phosphorus reacts with oxygen, usually forming two oxides depending on the amount available oxygen: P4O6 when reacted with a limited supply of oxygen, and P​4O10 when reacted with excess oxygen; the latter is shown below.

P4O10+6H2O→4H3PO(1.26)(1.26)P4O10+6H2O→4H3PO

On rare occasions, P​4O7, P​4O8, and P​4O9 are also formed, but in small amounts.

Both P​4O4 and P​4O10 react with water to generate oxoacids. Reactions are shown below.

Phosphorous acid:

P4O6(l)+6H2O(l)→4H3PO3(aq)(1.27)(1.27)P4O6(l)+6H2O(l)→4H3PO3(aq)

Phosphoric acid:

P4O10(s)+6H2O(l)→4H3PO4(aq)