Electrolysis :: Papers

Electrolysis How is the amount of slovenly person deposited affected by the voltage? Aim The aim of this test is to recover out what effect the change in voltage has upon the amount of slovenly person deposited in 5 minutes. The voltages I impart be using ar 2, 4, 6, 8, 10 and 12volts I allow use these voltages because they are the only ones ready(prenominal) on the power pack. I am doing the experiment for 5 minutes because it is decorous fourth dimension to get a result and it is short enough for doing 6 voltages in one lesson. I pull up stakes repeat this on another lesson to gain 2 sets of results. Prediction I predict that 12v will produce the most pig bed because there is more energy world transferred into the copper ions making the move quicker. Fair testing To make this experiment fair I will use the alike(p) amount of copper chloride (30ml) for each test, use the same graphite rods and sand them down to the same weight each t ime, do the experiment for the same length of time (5 mins). Apparatus * Power pack * 50ml beaker * 2 wires (with crocodile snip offs) * 2 graphite rods * bendable rod moderateer * Sand paper * Copper chloride * Stop becharm * Filter paper (to filter and deposited copper in the solution) * Funnel (to hold filter paper) * Weighing scales (electronic for more accuracy) IMAGE Method First I will plug in the power pack and the scales, pour 30ml of copper chloride into a beaker, sand a graphite rod, weigh it, record its weight and clip the invalidating wire to it (this rod is going to collect the copper because it is negative and the positive ions of the copper will be attracted to it), the other rod will have the positive