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The effects of electrolysis of Copper Sulphate Solution and copper electrodes
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Rory Franklin Chemistry Coursework 03/07/2001 10ABC Planning Aim: We are investigating the effects of electrolysis of Copper Sulphate Solution and copper electrodes, and the effects of changing the voltage of the current flowing through the circuit. We are keeping the concentration and the temperature constant. Background Information: I know from my own knowledge that electrolysis is the breakdown of a substance by electricity. I also know that opposite charges attract, this means that positive ions are attracted to the Cathode (-ve) and negative ions are attracted to the Anode (+ve). I know from the preliminary experiment that we did, that the Anode LOSES mass, whilst the Cathode GAINS mass. This is because the positive ions from the Anode are attracted to the Cathode through the Copper Sulphate solution and this means that the Cathode gains weight and the Anode loses weight. The equation at the Cathode is: Cu˛+ + 2eŻ Cu The equation at...
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