Diablo
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Will Potassium Nitrate and Vinegar react?
I want to quickly dissolve some iron with what I have on hand. I don't believe these will react with each other so I should be able to use the
oxidizer/acid combo. Once it's dissolved I'll precipitate it and wash it before dissolving in clean acid. Should I filter the iron hydroxide or wait
for it to settle and decant it?
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blogfast25
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Quote: Originally posted by Diablo  | | I want to quickly dissolve some iron with what I have on hand. I don't believe these will react with each other so I should be able to use the
oxidizer/acid combo. Once it's dissolved I'll precipitate it and wash it before dissolving in clean acid. Should I filter the iron hydroxide or wait
for it to settle and decant it? |
No reason to believe the two will react but:
NO3<sup>-</sup> + 4 H<sup>+</sup> + 3 e<sup>-</sup> === > NO + 2 H2O
... suggests strongly acidic conditions are needed for aqueous nitrates to show their oxidation powers and vinegar (4 - 5 % acetic acid in water) is a
weak acid, so the effect may not be very strong.
Settle and decant is probably easiest, as Fe(OH)3 has a tendency to peptise:
https://en.wikipedia.org/wiki/Peptization
[Edited on 28-1-2016 by blogfast25]
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