How are the following conversion brought about? Give equation and… - Vidyadip

Question

How are the following conversion brought about? Give equation and condition:
Sulphur trioxide to oleum.

✓

Answer

Sulphuric trioxide to oleum:
Absorption of sulphur trioxide in $98\%$ sulphuric acid to form oleum.
$SO_3 + H_2SO_4 → H_2S_2O_7$

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