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The aim of this experiment is to investigate the factors affecting Copper Plating and the work of Michael Faraday.

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Introduction

An Investigation on Electrolysis Contents: Aim: 3 Prediction: 3 Apparatus: 3 Fair test: 4 Method: 4 Diagram: 5 Results: 5 Conclusion: 7 Evaluation: 7 An Investigation on Electrolysis Aim: The aim of this experiment is to investigate the factors affecting Copper Plating and the work of Michael Faraday. Prediction: I predict that during the experiment, the copper plating on the negative side will decrease by losing electrons in mass whilst, the copper plating on the cathode side will increase in mass by gaining electrons. I predict that the mass of metal deposited will be directly proportional to the time and the current. I also therefore predict that if I double the time of the experiment, I will therefore be doubling the charge. This statement can be supported by both of Faraday's Laws. Faraday's First Law of electrolysis states that: "The mass of any element deposited during electrolysis is directly proportional to the number of coulombs of electricity passed" Faraday's Second Law of electrolysis states that: "The mass of ...read more.

Middle

A steady current should flow (0.5 Amps) and the experiment should be stopped every 5 minutes * At these times the current should be switched off and both electrodes should be removed from the solution * The electrodes should then be wiped dry and then weighed * The electrodes should then be carefully weighed and their masses should be recorded * This experiment should be done three times Experiment 2: Mass and Current For this experiment: * Firstly the apparatus is collected and set up * Then, pour 75cm3 of the Copper Sulphate solution into a small beaker * Weigh the two Copper Electrodes, record their masses and place into the beaker containing the Copper Sulphate solution * The electrodes are then connected to the power pack and ammeter. Changing the voltage then chooses the current. * The and the experiment is stopped every 15 minutes * At these times the current should be switched off and both electrodes should be removed from the solution * The electrodes should ...read more.

Conclusion

0.02 15 1.60 0.60 Experiment 2: Result 2 Current Time Cathode electrode Anode electrode 0 0 1.28 1.22 0.30 15 1.40 1.20 0.45 15 1.54 1.18 0.86 15 1.86 0.70 1.04 15 1.98 0.50 Conclusion: In this experiment, I found that my prediction was correct because the mass the cathode electrode that the longer the current is left to flow, the more Copper metal is deposited on the cathode. This gives the indication that the longer the experiment lasts, the higher the charge and therefore, the higher the amount of Copper produced. I am therefore correct in saying that, through this experiment, both of Faraday's Laws Of electrolysis are correct. Evaluation: I feel that this experiment has been very successful. However my results show that it could have been better. The experiment could have been improved if the electrodes had been checked properly. To make the results better, new electrodes should have been used for each experiment. I also think that the same equipment should have been used throughout. ...read more.

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