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4hv.org :: Forums :: Chemistry
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Cu + H2O2 + H2SO4?

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Jim
Mon Mar 20 2006, 04:58PM Print
Jim Dunce.
Registered Member #28 Joined: Fri Feb 03 2006, 03:29AM
Location:
Posts: 76
I mixed some 3% H2O2 and some conc. H2SO4 and added a piece of copper. A few days later, I noticed that there was a blue solution, with small blue crystals attached to the copper strip, and small blue crystals in the bottom of the vessel. What have I created? CuSO4?
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Bored Chemist
Mon Mar 20 2006, 07:32PM
Bored Chemist Registered Member #193 Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
Almost certainly yes, CuSO4 as the hydrate ie CuSO4.5H2O
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Jim
Mon Mar 20 2006, 09:10PM
Jim Dunce.
Registered Member #28 Joined: Fri Feb 03 2006, 03:29AM
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Posts: 76
I guess I have a super saturated solution of CuSO4 then? As there are crystals within the solution.
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Simon
Mon Mar 20 2006, 11:57PM
Simon Registered Member #32 Joined: Sat Feb 04 2006, 08:58AM
Location: Australia
Posts: 549
Not super-saturated but if you have a solution with normally soluble solids at the bottom, that generally means the solution is saturated.
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Jim
Mon Mar 20 2006, 11:59PM
Jim Dunce.
Registered Member #28 Joined: Fri Feb 03 2006, 03:29AM
Location:
Posts: 76
Right on, I got a bit itchy with the super part there. I want to electroplate silver with copper, I tried using this solution, however, I got mixed results.
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