1.

Sulphur heptoxide is an anhydride of

Answer»

`H_(2)S_(2)O_(8)`
`H_(2)S_(2)O_(7)`
`H_(2)SO_(4)`
`H_(2)SO_(5)`.

Solution :`S_(2)O_(7) + H_(2)O RARR UNDERSET("Persulphuric ACID")(H_(2)S_(2)O_(8))`


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