More than 100 percent of _________________ is present in oleum?
Correct answer: B. H2SO4
- A. SO3
- B. H2SO4
- C. H2SO3
- D. SO2
Explanation
Oleum is sulfuric acid containing dissolved excess SO3, and its strength is commonly expressed as equivalent H2SO4 percentage. Because of this convention, oleum can be specified as containing more than 100% H2SO4.
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