Question

The number of molecules of water needed to convert one molecule of P2O5 into orthophosphoric acid is :
(1) 2
(2) 3
(3) 4
(4) 5​

please explain on paper

Answer 1

Here is your answer: 3 moles are required:

The balanced equation is: P₂O₅ + 3H₂O --> 2H₃PO₄

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