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What is the answer for that!?

What is the answer for that!?

Question Image
Grade:10

1 Answers

Anoopam Mishra
126 Points
5 years ago
In the manufacture of H2SO4, the reaction: 
H2O + SO3 → H2SO4 is not used because it is highly exothermic. 
Instead, the SO3 is dissolved in conc H2SO4 to form a substance called oleum, H2S2O7. This is then dissolved in water to produce H2SO4 
H2S2O7 + H2O → 2H2SO44 This is a much more controllable reaction.
Please approve.

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