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IParkForFree t1_j1wu3du wrote

Exothermic reaction is just a general thermodynamics term for reactions with negative delta H. This is like asking if the sun is a good avenue for energy. Your question is so general that it doesn’t really make sense, sorry.

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ADSWNJ t1_j1wzjpf wrote

I think OP is imagining a perpetual energy generating reaction with no downside (such as reactants getting consumed). As /u/chemchris says, and I extend a bit... mass-energy does not get created or destroyed (noting Einstein's E=mc^2 converts mass to energy, as we see in nuclear fission).

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IParkForFree t1_j1x6cfk wrote

I guess what i’m saying is, you need fuel for an exothermic reaction. There are a million possibilities here. Which fuel is OP referring to?

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ADSWNJ t1_j21pop7 wrote

Yeah - that's the point I think. Maybe OP thinks an ecothetmuc reaction is creating free energy!!

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