In the manufacture of sulphuric acid by ...

In the manufacture of sulphuric acid by contact process give the equation for the conversion of sulphur trioxide to sulphuric acid.

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Conversion of Sulphur trioxide into Sulphuric acid :
`SO_3 + H_2 SO_4 to underset("Oleum")(H_2 S_2 O_7)`
`H_2 S_4 O_7 + H_2 O to underset("Sulphuric acid")(2H_2 SO_4)`

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