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Author: Subject: Stoichiometry of the reaction of ascorbic acid and copper sulfate
Draeger
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[*] posted on 27-6-2020 at 10:13
Stoichiometry of the reaction of ascorbic acid and copper sulfate


I am interested in doing the reaction of ascorbic acid and copper sulfate to produce copper powder. I like to do my reactions very close to the stoichiometric amounts, but I can't find any information on the reaction except for that it exists. I probably just missed something, so could someone help me?



Collected elements:
Al, Cu, Ga, C (coal), S, Zn, Na

Collected compounds:

Inorganic:
NaOH; NaHCO3; MnCl2; MnCO3; CuSO4; FeSO4; aq. 30-33% HCl; aq. NaClO; aq. 9,5% ammonia; aq. 94-96% H2SO4; aq. 3% H2O2

Organic:
citric acid, sodium acetate, sodium citrate, petroleum, mineral oil
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Tsjerk
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[*] posted on 27-6-2020 at 10:49


Should be 1:1.

Ascorbic acid loses two electrons while forming dehydroascorbic acid.
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Draeger
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[*] posted on 27-6-2020 at 11:35


Quote: Originally posted by Tsjerk  
Should be 1:1.

Ascorbic acid loses two electrons while forming dehydroascorbic acid.

Alright. Thank you.




Collected elements:
Al, Cu, Ga, C (coal), S, Zn, Na

Collected compounds:

Inorganic:
NaOH; NaHCO3; MnCl2; MnCO3; CuSO4; FeSO4; aq. 30-33% HCl; aq. NaClO; aq. 9,5% ammonia; aq. 94-96% H2SO4; aq. 3% H2O2

Organic:
citric acid, sodium acetate, sodium citrate, petroleum, mineral oil
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UC235
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[*] posted on 27-6-2020 at 19:56


To avoid under-reduction and formation of Cu(I) species, I would advise a generous excess of ascorbic acid.
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