1.

On addition of conc. H_(2)SO_(4) to a chloride salt, colourless fumes are evolved but in case of iodide salt, fumes come out. This is because

Answer»

`H_(2)SO_(4)` reduces `HI` to `I_(2)`
`HI` is of VIOLET colour
`HI` gets oxidised to `I_(2)`
`HI` CHANGES to `HIO_(3)`

Solution :`HI` being a stronger reducing agent than `H_(2)SO_(4)` reduces `H_(2)SO_(4)` to `SO_(2)` and itself gets oxidised to `I_(2)`.


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