1.

Sulphur trioxide gas when dissolved in H_(2)SO_(4) the product obtained is :

Answer»

`H_(2)SO_(3)`
`H_(2)SO_(5)`
`H_(2)S_(2)O_(7)`
`H_(2)S_(2)O_(8)`

Solution :`H_(2)SO_(4)+SO_(3) to underset("Acid")underset("Pyrosulphuric")underset("OLEUM")(H_(2)S_(2)O_(7))`


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