What are the compounds formed when white Phosphorous is dissolved in boiling NaOH solution in an inert atmosphere ?

Options

A. `PH_(3), NaPO_(4)`
B. `NaH_(2) PO_(4), P(OH)_(3)`
C. `PH_(3), NaH_(2)PO_(2)`
D. `P_(4)O _(10), Na `

Answer

C

Explanation

In an inert atmosphere white phosphorous is dissolved in boiling NaOH i.e., `P _(4) + 3 NaOH + 3h _(2) O to PH_(3) + 3NaH_(2)P O_(2)`
This forms sodium hypo-phosphate and `PH _(3)i.e., NaH_(2)PO_(2) and PH _(3)`