Jacinta00
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My lab partners and I had run an experiment regarding electrochemical cells. We set up a galvanic cell to calvulate the cell standard reduction potential values of the metals we've tested and arrange Al, Zn, Mg, Fe and Cu in the correct order of increasing strength as reducing agent. Cu acted as the cathode whereas the other metals acted as the anode throughout the experiment. According to the emf series, the correct order should be Cu<Fe<Zn<Al<Mg. But we encountered a problem with Al during the experiment, because its Ecell value was the smallest compared to the others. So, our result of this experiment was Cu<Al<Fe<Zn<Mg. We can't seem to find the cause of this error because that is the data we've collected, and we followed the procedures correctly. Can u help me out with this?
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Pigster
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Did the Al have a layer of Al2O3 that was preventing redox?
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Jacinta00
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No, it didn't :/
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