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Question

What is the product formed when phosphorus pentoxide is boiled with hot water?

A
H3PO4
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B
HPO3
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C
H3PO3
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D
H4P2O6
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Solution

The correct option is C H3PO4
Phosphoric acid (H3PO4) is the product formed when phosphorus pentoxide is boiled with hot water.
Burning P in air producesP2O5 which dissolves in water to form H3PO4 - ortho phosphoric acid which is a strong acid.
P2O5+3H2O2H3PO4

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