Electrolysis of copper ii sulphate solution this experiment is designed to demonstrate the different products obtained when the electrolysis of copper ii sulfate solution is carried out first with inert graphite electrodes and then with copper electrodes. Aqueous copper ii sulfate about 0 5 m 200 cm 3.
My intention for this observation is to find out how the current has an effect on the mass of copper deposited in the electrolysis of copper sulphate and copper ii plates.
Electrolysis of copper sulfate solution. To investigate the electrolysis of copper sulfate solution using non inert electrodes. Electricity is passed through solutions containing copper compounds such as copper ii sulfate. As cuso 4 is an electrolyte it splits into cu cation and so 4 anion ions and move freely in the solution.
This class experiment can be done by students working either in pairs or threes. The procedure is extremely simple just get a copper sulfate solution insert two electrodes and run a current through them. The anode the positive electrode must be an inert material that can withstand extremely oxidizing conditions.
At the positive electrode copper. In this practical students carry out the electrolysis of copper ii sulfate solution. The anode positive electrode is made from impure copper and.
Very few materials meet this condition platinum lead dioxide and carbon among them. Copper is purified by electrolysis. This experiment enables students to carry out the electrolysis of copper ii sulfate solution and to link their findings with the industrial electrolytic refining of copper.
Electrolysis of copper sulfate. Whenever copper sulfate or cuso 4 is added to water it gets dissolved in the water. Copper electrodes take part in the reactions and are described as non inert.
Using the simple apparatus right diagram and two copper electrodes the products of the electrolysis of copper sulfate solution are i a copper deposit on the negative cathode electrode and ii copper dissolves at the positive anode electrode. The use of copper electrodes illustrates how copper is refined industrially. For my gcse chemistry assessment i will be investigating the electrolysis of copper sulphate solution with the copper ii plates.
This class experiment can be done by students working either in pairs or threes. The outcomes of the experiment provide the opportunity to introduce a discussion about electroplating and the industrial electrolytic refining of copper. The products of electrolysing copper sulfate solution with copper electrodes are copper metal and copper ions because the copper anode dissolves.
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