Thu September 13, 2012 By: Neha Mishra

what happen when SO3 is passed through: 1.water 2.concentrated suphuric acid

Expert Reply
Fri September 14, 2012
1. sulphuric acid.
2Sulphur trioxide from the contact tower is passed onto absorption tower where it is absorbed by descending stream of 98% sulphuric acid to form oleum. It is diluted with water to get sulphuric acid of desired concentration.

SO3 + H2SO4 -----> H2S2O7
H2S2O7 + H20 -----> 2H2SO4
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