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Give tbe principles involved in the manu...

Give tbe principles involved in the manufacture of sulphuric acid by contact procces with equations :

Text Solution

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(1) Production of `SO_(2)` :-
By burning elemental sulphur in presence of air
`" "S+O_(2)+SO_(2)`
(2) Oxidation of `SO_(2)" to "SO_(3)` :-
`2SO_(2)+O_(2) underset(underset(2"bar")(720K))overset(overset(V_(2)O_(3))(rarr))(larr)2SO_(3)DeltaH=-196.6KjM.`
3) Absorption of `SO_(3)` in `H_(2)SO_(4)` to form oleum
`" "SO_(3)+H_(2)SO_(4) rarr H_(2)S_(2)O_(7)`
Oleum is diluted with waker to form concentrated `H_(2)SO_(4)`,
`" "H_(2)S_(2)O_(7)+H_(2)O rarr 2H_(2)SO_(4)`.
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