1.

Sulphur trioxide can be obtained by which of the following reaction :

Answer»

`CaSO_(4)+C overset(Delta)to`
`Fe_(2)(SO_(4))_(3) overset(Delta)to`
`S+H_(2)SO_(4) overset(Delta)to`
`H_(2)SO_(4)+PCI_(5) overset(Delta)to`

Solution :`Fe_(2)(SO_(4))_(3) overset(Delta)to Fe_(2)O_(3)+SO_(3)`


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