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Topic: Copper and Acetic Acid cells  (Read 3980 times)

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Offline Vicstar

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Copper and Acetic Acid cells
« on: January 28, 2008, 11:36:20 PM »
Solid Cu is placed in a solution of KNO3. In another cell, there is a Pt wire immersed in aqueous Acetic Acid. Both cells are attached via a salt bridge and have a current passed through them. The copper solid decreases in mass.

Has anyone done this specific prac before? WOuld anyone happen to know the two half equations for this prac?
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Offline Arkcon

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Re: Copper and Acetic Acid cells
« Reply #1 on: January 29, 2008, 12:25:16 AM »
Here's a small hint -- try to start with the ionization reactions of acetic acid in water, and HNO3 in water.  Also, the copper bar decreases mass, so where does it go?
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline Vicstar

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Re: Copper and Acetic Acid cells
« Reply #2 on: January 29, 2008, 12:45:45 AM »
Cu(s) -> Cu2+ (aq) + 2e

and do u think its

2H2O(l) -> H2(g) + OH-(aq)
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Offline Arkcon

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Re: Copper and Acetic Acid cells
« Reply #3 on: January 29, 2008, 10:52:49 AM »
It says this is a cell, and a current is passed through them, but is it a battery, in that it produces a current?
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.
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