pneumatician - 20-6-2020 at 08:41
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? 
chornedsnorkack - 20-6-2020 at 09:26
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?