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What happens when white phosphorus is he...

What happens when white phosphorus is heated with concentrated `NaOH` solution in an inert atmosphere of `CO_(2)`?

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White phosphorous dissolves in boiling `NaOH` solution (in a `CO_(2)` atmosphere) to give phosphine, `PH_(3)`.
`P_(4) + 3NaOH + H_(2) O to underset("Phosphine")(PH_(3)) + underset("Sodium hypophosphite")(3NaH_(2) PO_(2))`
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