Questions tagged [noble-metals]

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What is the reason why galvanic series is in it's specific order?

I'm trying to understand why galvanic series molecular entities are in the order they are in. Why does $\ce{Cu(s)}$ reduce $\ce{Ag^{2+}}$ ions but not $\ce{Pb^{2+}}$ ions? there seems to be some kind ...
Lid's user avatar
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Does fluoroantimonic acid dissolve noble metals?

Hello,Does fluoroantimonic acid dissolve noble metals? Nernst equation suggests that platinum would require pH ≈ −20.1 to be dissolved, using Hammett acidity function as an extension of pH ...
pajacol's user avatar
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By how much does borax reduce the melting temperature of gold?

I'm researching ways in how to salvage gold from old electronics. I think I got the process down but I have one question. When you have salvaged the gold from the electronics you are left with gold ...
Neil Meyer's user avatar
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Separation of Noble Metals for scrap recovery

I am researching scrap metal recovery as a side job and am hitting a wall with the noble metals. Gold, Silver, Platinum, and Palladium seem like they're all fairly easy to recover. I just can't find a ...
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9 votes
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Gold Plating on Glass?

I am considering labware options to handle NaOH solutions at ~150 °C. One appealing idea would be to coat my current glassware with gold. I've read different sources mentioning the possibility without ...
Hans's user avatar
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Gold/platinum + HF

I know that noble metals such as gold/platinum are unaffected by conc. mineral acids such as HCl or H2SO4 or HNO3 but Can be dissolved in aqua regia (mix of HCl and HNO3 in 3:1), but never heard about ...
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Why do noble metals like silver not form natural cubic crystals?

Pyrite forms cubic crystals, both in theory and in nature: However, the noble metals, like silver, that have cubic, face-centered lattices, do not seem to form cubic crystals in nature. One possible ...
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What noble metal is most resistant to oxidation by diatomic oxygen in air at room and elevated temperatures?

To clarify, by noble metals in this case I mean all platinum metals + gold, no copper, silver or rhenium. These noble metals are described as having low reactivity, but which one is least reactive or ...
wav scientist's user avatar