The reaction of `P_(4)` with X leads selectively to `P_(4)O_(6)` The X is :

Options

A. Dry `O_(2)`
B. A mixture of `O_(2)` and `N_(2)`
C. Moist `O_(2)`
D. `O_(2)` in the presence of aqueous NaOH

Answer

B

Explanation

`P_(4)+3O_(2)overset`("In presence of"`N_(2))toP_(4)O_(6)`. "Here nitrogen acts as diluent".
Note:
"In dry" `O_(2)` "followintg reactions may take place".
`P_(4)+3O_(2)to P_(4)O_(6)`.
`P_(4)O_(6)to P_(4)2O_(2)to P_(4)O_(10)`.
"In moist" `O_(2)` the `P_(4)O_(6)` "gets hydrolysed forming" `H_(3)PO_(3)`.
`P_(4)O_(6)to 4H_(3)PO_(3)`.
"In presence of NaOH".
`P_(4)+3OH^(-)+3H_(2)O to PH_(3)+3H_(2)PO_(2)^(-)`