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Mini Pyrolyse-System bauen?

ByEric265464

Hallo eine kleine Verständnisfrage: Ich hab hier was grob gezeichnet. Wie vielfach auf Youtube zu sehen, kann ich diverse Kunststoffe (Zahl 0 auf der Abbildung) ohne Sauerstoff mittels Holzfeuer auf ca. 500°C erhitzen und das entstehende Gas über Schleuche in aneinander gereihte Kanister strömen lassen. Ich bin kein Chemiker aber rein nach logischem Denken müssten…

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1trying2help
1trying2help
1 year ago

Unfortunately, I do not know well enough to calculate here, but it is as far as I know that the pH also increases with increasing temperature.

PS: I hope that helps

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Ralph1952
Ralph1952
1 year ago

Water is considered neutral because the autoprotolysis produces equal numbers of H3O+ and OH ions. With increasing temperature, protolysis increases and the H3O+ ions become somewhat more effective or the water becomes a little “acid”. Precise backgrounds and the pH at different temperatures can be found in the table in the annex.

https://www.chemieunterricht.de/dc2/wasser/pH-T.htm

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PeterJohann
PeterJohann
1 year ago

This is about the ion product of autoprotolysis of water at various temperatures:

PKw = Kw

Kw= [OH] * [H3O+] => [OH-] = [H3O+] => Kw = [H3O+]2 => [H3O+] = √Kw =>

pH = -lg[H3O+] = – lg√Kw

This would then be pH7.34 at 5° and pH6.63 at 50° C.

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