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Author: Subject: Production of nickel, copper and silver as potassium cyanide
autumnwilow
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[*] posted on 23-11-2016 at 04:33
Production of nickel, copper and silver as potassium cyanide


I have successfully produced very pure PGC by electrochemical preparation by using 40gpl of KCN as both the anode and cathode solution.

The anode was a 24k pure gold foil, the cathode was a 304 Stainless steel inside a porous cup. Voltage was around 12v.

Upon anode disintegration, the anode solution was boiled down to 25% volume, as the solution cools very white PGC precipitated. Washed with very cold water three times and was vacuum dried.

Now I wonder if the same procedure will work for Nickel, Copper and Silver? As their potassium cyanide salt form is not readily available in my country I have to prepare them myself.
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PHILOU Zrealone
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[*] posted on 30-11-2016 at 09:47


PGC? Potassium Gold cyanide?



PH Z (PHILOU Zrealone)

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autumnwilow
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[*] posted on 4-12-2016 at 07:15


Quote: Originally posted by PHILOU Zrealone  
PGC? Potassium Gold cyanide?


Yes, exactly.
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Fleaker
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[*] posted on 21-12-2016 at 09:10


Silver I think yes. I don't know about the others.



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DraconicAcid
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[*] posted on 21-12-2016 at 09:55


K2[Ni(CN)4] is easily made by reaction of KCN with nickel cyanide (itself easily made by reaction of any soluble nickel salt with two equivalents of potassium cyanide).



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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