Qualifies mixing of gases as dissolution?
Comment on Do farts at least nominally increase the overall temperature of the room in which they are extruded?
dgdft@lemmy.world 11 hours agoThe act of mixing is an exothermic chemical process that does in fact explicitly generate heat. You can read up here if curious: en.wikipedia.org/…/Enthalpy_change_of_solution
I have a degree in physics and work in biomed R&D. I am a qualified fart scientist — this is what I live for.
Successful_Try543@feddit.org 11 hours ago
dgdft@lemmy.world 9 hours ago
In a nutshell, the bonds in question are intermolecular forces, not bonds between atoms within a molecule.
Successful_Try543@feddit.org 3 hours ago
Of course. Otherwise this would qualify as a chemical reaction.
I’d totally get it, if were taking about lets say vaporising of perfume or fuel. There, the bonding forces between the molecules of the liquid (van der Waals, H-bridges) are released, and thus stored energy is set free.
dgdft@lemmy.world 1 hour ago
Yeah, that’s fair.
I was focused on the marginal effect no matter how small, but you’re right that heat of solvation for gases is minuscule. I’m won over on the idea that it would be outweighed by cooling effect of gas expansion from fart decompression.
CompactFlax@discuss.tchncs.de 10 hours ago
But isn’t there some contribution from the delta in pressure?
dgdft@lemmy.world 9 hours ago
Yeah, you’re right — there would be some cooling from pressure release.