Absorption of SO3 in 97% H2SO4 is_______________?
Correct answer: A. Exothermic
- A. Exothermic
- B. Endothermic
- C. Not possible
- D. None of these
Explanation
SO3 reacts with concentrated sulfuric acid to form oleum, and this absorption releases substantial heat. Hence absorption in 97% H2SO4 is exothermic and requires heat removal.
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