Chemical formula of oleum is_________________?
Correct answer: C. H2S2O7
- A. H2SO3
- B. H2SO4
- C. H2S2O7
- D. H2SO7
Explanation
Oleum is fuming sulphuric acid, produced by dissolving sulphur trioxide in sulphuric acid. Its commonly represented formula is H₂S₂O₇, also called disulphuric or pyrosulphuric acid.
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