Nitric acid plus the chlorine in your tap water creates AR and dissolves gold.diverwild said:
Dave
is it necessary to dilute AR before precipitation
- Thread starter diverwild
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Dave
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FrugalRefiner said:
Hence my post about understanding the AR chemistry.
Yes, I know. I just tried to provide the explanation a little more directly.anachronism said:
Dave
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Dave it wasn't directed at you, it was directed at the OP 8) He's obviously missing the correlation with this.
upcyclist
Well-known member
A simple rule that will make your life easier: don't use tap water with any processes involving nitric acid as your only acid. The chlorine tends to either make AR or AgCl. Probably ditto for sulfuric. Use distilled water.
In the summer, water off my old dehumidifier coils is as effective as distilled water (as long as the tank is clean and mildew-free). It's essentially distillation without the heat, since it condenses the moisture in the air instead of heated water vapor from boiling.
In an informal lab, you can use tap water with HCl, but if you really want to run a tight ship, only use distilled water. That way you have more control over what chemicals are present in your work.
In the summer, water off my old dehumidifier coils is as effective as distilled water (as long as the tank is clean and mildew-free). It's essentially distillation without the heat, since it condenses the moisture in the air instead of heated water vapor from boiling.
In an informal lab, you can use tap water with HCl, but if you really want to run a tight ship, only use distilled water. That way you have more control over what chemicals are present in your work.
