condennnsa
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nickel sulfate
I added a 19.6 g nichrome heating element to 100g 30% H2SO4, and 100 ml of water. I then began heating the solution, and it started to react visibly,
but after about 10 minutes the reaction stopped ... The solution just started to boil, but no Hydrogen was being produced at the metal.
The solution is a deep blue-green color. I weighed the leftover nichrome, and it's 12.6g, so 7g of Ni/Cr went in solution, but why won't the rest of
the metal keep reacting? There is still plenty of acid...
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blogfast25
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Try another acid, like hot, strong HCl. For pure Ni HCl isn't great but for nichrome it could work fine (if not, you might be separating Ni from Cr).
I had a similar experience with H2SO4 dissolution of an NdFe magnet where inexplicably the reaction simply stopped after a few minutes. Boiling didn't
revive it either. Strange...
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NedsHead
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I tried reacting a 0.3g strip of nickel with sulphuric acid in a test tube, I started with 50% concentration sulphuric acid but added a few drops of
more concentrated acid when the reaction slowed and then applied heat to really get things going, what I ended up with is a white precipitate in a
very faint green solution.
the nickel strips were purchased from eBay http://www.ebay.com.au/itm/132053792926?_trksid=p2057872.m27...
The seller claims they are 99.96% nickel and not nickel electroplated on a substrate.
What might this precipitate be?
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Dan Vizine
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That's not the right question NedsHead. Ask what the metal is. It can't be Ni.
"All Your Children Are Poor Unfortunate Victims of Lies You Believe, a Plague Upon Your Ignorance that Keeps the Youth from the Truth They
Deserve"...F. Zappa
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Texium
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Thread Moved
18-5-2017 at 08:44 |
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