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A dark violet solid X reacts with NH3 to...

A dark violet solid X reacts with `NH_3` to form a mild explosive which decomposes to give a violet coloured gas. X also reacts with `H_2` to give an acid Y. Y can also be prepared by heating its salt with `H_3PO_4`. X and Y are

A

`Cl_(2), HCl`

B

`SO_(2),H_(2)SO_(4)`

C

`Br_(2), HBr`

D

`I_(2),HI`

Text Solution

Verified by Experts

The correct Answer is:
D
`X=l_(2), Y=HI`
`underset((X))(3l_(2)) + 2NH_(3) to underset (("Explosive"))(NH_(3).Nl_(3))`
`l_(2)+H_(2) to underset ((Y))(2Hl)`
`3Nal+H_(3)PO_(4) overset("heat")to Na_(3)PO_(4)+underset((Y))(3Hl)`
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