Foeskes
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Trouble with getting nickel(II) to dissolve in ammonia.
I am trying to separate nickel from iron and chromium. I first dissolve the metal in HCl and precipitate the metals out with sodium bicarbonate. Then
I tried to dissolve the nickel and chromium in ammonia but it doesn't seem to dissolve much (really light blue).
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ninhydric1
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First, use NaOH to convert the chromium to soluble chromates while precipitating the iron and nickel as their corresponding hydroxides.
Iron(III) acetate is insoluble in water while nickel(II) acetate is soluble in water. I believe allowing any iron(II) ions to oxidize to iron(III)
would allow separation using acetic acid or a soluble acetate salt. Filter the iron(III) acetate precipitate, allowing easier separation than using
ammonia.
EDIT: Some grammar fixes.
[Edited on 11-13-2017 by ninhydric1]
The philosophy of one century is the common sense of the next.
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Foeskes
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I don't really have any concentrated acetic acid, only vinegar.
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ninhydric1
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Vinegar should work too, but you would have to deal with a substantial amount of water.
The philosophy of one century is the common sense of the next.
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DraconicAcid
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How dilute is your ammonia if nickel won't dissolve in it?
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Foeskes
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It's 25%
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