woelen - 7-12-2021 at 11:09
I found this interesting reaction:
https://woelen.homescience.net/science/chem/exps/raw_materia...
Hydroxylamine can oxidize vanadium from +4 oxidation state to +5 oxidation state, but it can also reduce vanadium from +5 to +4. It depends on pH.
Quite a remarkable thing, which I want to share with you.