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Class 8-9-10, JEE & NEET
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In the preparation of H2SO4 by Contact Process, why is SO3 not absorbed directly in water to form H2SO4?
Dissolution of SO3 in water is highly exothermic. This leads to the formation of a mist of tiny droplets which are highly corrosive and they can even attack the lead
pipelines (lead pipelines are used to cover the tower in contact process).