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Old 05-12-2008, 08:23 PM   #1
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Chem Q...Electroplating

In the electroplating of nickel, .200 faraday of electrical charge is passed through a solution of NiSo4. What mass of nickel is deposited?
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Old 05-12-2008, 08:44 PM   #2
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? g Ni = .200( 96,500 C / mole e-)(2 moles e-/1 mole Ni) (58.69 g/ 1 mole Ni)

this is wrong, I come out with an answer of 2.27 x 10^6, way too large, but maybe my proceedure will spark some1 else to realize the way this problem is actually solved?
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Old 05-12-2008, 10:28 PM   #3
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Man, I cannot sleep before answering this one.

.200 Faradays = moles of e- flowing.
Since Ni2+ is become Ni solid, two electrons are moving per Ni, so .100 mol Ni.

But I am shaky as heck on this, so if someone could affirm or explain, PLEASE do so.
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Old 05-12-2008, 10:31 PM   #4
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that's definitely right. then multiply by the FW to get mass. you should come out with .5 ish. This is the 2004 multiple choice, right? I can't believe i know that off the top of my head lol.
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Old 05-12-2008, 10:33 PM   #5
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Man, why DO you know that off the top of you head?

I'm so woefully underprepared. =(

Haha, it did ask for mass, oops.
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