P2o5+h2o=

The reaction between phosphorus pentoxide (P₂O₅) and water (H₂O) typically results in the formation of phosphoric acid (H₃PO₄). The balanced chemical equation for this reaction is:

\[ \text{P}_2\text{O}_5 + 3 \text{H}_2\text{O} \rightarrow 2 \text{H}_3\text{PO}_4 \]

So when P₂O₅ reacts with H₂O, it produces phosphoric acid.