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On reaction with Cl(2), phosphorus forms...

On reaction with `Cl_(2)`, phosphorus forms two types of halides 'A' and 'B'. Halide 'A' is yellowish-white powder but halide 'B' is colourless oily liquid. What would be the hydrolysis products of 'A' and 'B' respectively?

A

`H_(3)PO_(4), H_(3)PO_(3)`

B

`HOPO_(3), H_(2)PO_(2)`

C

`H_(3)PO_(3), H_(3)PO_(4)`

D

`HPO_(3), H_(3)PO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
A is `PCl_(5)` (yellowish white powder).
`P_(4)+10Cl_(2)rarr4PCl_(5)`
B is `PCl_(3)` (colourless only liquid).
`P_(4)+6Cl_(2)rarr4PCl_(3)`
The products of hydrolysis of `PCl_(3) and PCl_(5)` are:
`underset((B))(PCl_(3))+3H_(2)OrarrH_(3)PO_(3)+3HCl`
`underset((A))(PCl_(5))+4H_(2)OrarrH_(3)PO_(4)+5HCl`
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