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Q.
An element forms a solid oxide which when dissolved in water, forms an acidic solution. The element is
BHUBHU 2009
Solution:
Phosphorus pentoxide $\left(P_{2} O_{5}\right)$ is a white solid. It forms an acidic solution with water.
$P _{2} O _{5}+3 H _{2} O \rightarrow \underset{\text { orthophosphoric acid }}{2 H _{3} PO _{4}}$