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Author: Subject: H2SO4 by the Lead Chamber Process - success
International Hazard

Posts: 514
Registered: 3-11-2013
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[*] posted on 20-5-2017 at 16:44

I no longer think that will work.

However I'm still sort of interested in ways to reduce/absorb the heat of hydration of SO3. Instead of dealing with strange chemicals the following rxn seems interesting:

CaSO4*2H2O (plaster/gypsum) + 2 SO3 >> CaSO4 + 2H2SO4

with significantly less heat released than the reaction with water, but still a lot. How to perform this though?

The difficulty is not in producing SO3, which happens by simply heating bisulfate, but in capturing it without destroying it or killing the experimenter.
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