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Subject: Re: [Homebrew_PCBs] Re: Disposing of Chemicals

From: "Dale J. Chatham" <dale@...>
Date: 2007-04-16

That is my thought.

I suppose the following could occur:
CuCl + NaOH -> CuOH + NaCl?

There has to be a way to predict it, but it's been a long, long time.


pcb.easy wrote:
> --- In Homebrew_PCBs@yahoogroups.com, "Dale J. Chatham" <dale@...>
> wrote:
>
>> I'm guessing, drawing on high school and college chemistry.
>>
>> H2O2 + HCl + Cu -> 2H20 + CuCl
>> Unreacted H2O2 and HCl remain in solution.
>>
>> HCl + NaOH -> NaCl + H2O
>>
>> You are very unlikely to produce H2O2 in the reaction with HCl and
>>
> NaOH,
>
>> IMO.
>>
>> My guess is that you have CuCl as the blue sludge. I suppose it
>>
> could
>
>> be CuOH, but you'd have to convince yourself that Cu would rather
>>
> bond
>
>> with OH. A smell of chlorine when you are reacting would be a
>>
> clue, or
>
>> bubbles and a yellow gas.
>>
>>
> Thanks for your relpy. Your correct, I don't know why I typed HCl _
> NaOH = NaCl + H2O2, H2O2 is Hydrogen Peroxide. So the thinking is
> that the Blue sludge is CuCl, and the clear liquid at the top is salt
> water?
>
>
>
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