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Does Current Affect The Amount Of Copper Transferred During Electrolysis With Copper Electrodes In A Copper Sulphate Solution?
Member rating: No Rating | Words: | Submitted: Mon Sep 15 2003
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Does Current Affect The Amount Of Copper Transferred During Electrolysis With Copper Electrodes In A Copper Sulphate Solution? By Will McEwan Aim To investigate how the amount of copper transferred during electrolysis is influenced by the current. Prediction I predict that with a greater current, more copper will be transferred. They will be directly proportional. Hypothesis The Copper atoms are using the electrolyte (copper sulphate) to transfer themselves between the two electrodes. If the current increase then the amount of copper atoms crossing between the electrodes also increases, thus increasing mass of copper transferred. Apparatus Ammeter Beaker Cell Pack Stopwatch Copper Sulphate Solution Copper Electrodes Crocodile Clips Scales Propanone Iron Wool Variable Resistor Wires Diagram Method * Take the copper electrodes and clean them with iron wool (to remove impurities on surface and aid electrolysis), taking care not to get splinters of iron into fingers. * Once cleaned wipe with tissue soaked in propanone. From this point the electrodes can no longer be touched by the paddles, this is to protect...
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