Phosphorus reacts with `SO_(2) CI_(2)` to form `PCI_(5)` and `X. At ` 723 K , HCI gas reacts with `O_(2)` in the presence of `CUCI_(2)` to form water and Y.Y reacts with X in water to form two acids A and B. What are A and B respectively ?

Options

A. `H_(2)SO_(4) HCI`
B. `H_(2) SO_(4) HNO_(3)`
C. `HCI , HNO_(3)`
D. `H_(2) SO_(4) H_(3) PO_(4)`

Answer

A

Explanation

When thiony chloride reacts with white
phosphorus phosphorus pentachloride and `SO_(2) ` is formed
`P_(4) + 10SO_(2) C1_(2) to 4PCI_(5) + 10SO_(2) (x )`
At 723 K HCI gas reacts with `O_(2)` in the presence of `CuCI_(2)` to form water and `CI_(2)` (Y)
`4HCI + O_(2) overset( 723 k ) (to) 2CI_(2) + 2H_(2) O `
`CI_(2) (Y)` react with `SO_(2) (x)` in water to form two acids HCI (A ) and `H_(2) SO_(4) (B)`
`SO_(2) + 2H_(2) O + CI_(2) to 2HCI + H_(2) SO_(4)`