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Question
How are the following conversions brought about? Give equation and condition:
Sulphur trioxide to sulphur acid.
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Solution
Sulphur trioxide to sulphur acid:
There is absorption of sulphur trioxide in 98% sulphuric acid to form oleum.
SO3 + H2SO4 → H2S2O7
Dilution of oleum to get sulphuric acid of desired concentration.
H2S2O7 + H2O → 2H2SO4
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