pneumatician
Hazard to Others
Posts: 409
Registered: 27-5-2013
Location: Magonia
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Mood: ■■■■■■■■■■ INRI ■■■■■■■■■■ ** Igne Natura Renovatur Integra **
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Aqua Regia + K2co3
hi,
I make some AR and try to kill it with K2co3 and a lot of insoluble precipitate come. what the hell is this?
What is the best method to kill AR, less product, no precipitate... more or less nitric or hcl...?
yes, I dissolved some gold in it and want to neutralize the AR leaving the Gold in the "water". Well if precipitate is evolved no problem if the Gold
remaind in soluble state in a netutral solution.
maybe I ask for too much? 
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chornedsnorkack
National Hazard
Posts: 521
Registered: 16-2-2012
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Yes, too much to ask.
In basic conditions, gold is precipitated as gold oxide.
What is the maximum pH for gold to stay in solution?
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