electrolysis of copper sulphate worksheet

Second example: electrolysis of solutions, like copper sulfate in water. The Electrolysis of Copper Sulphate Sheet. 9d. The electrolysis of copper(II) sulfate solution. Worksheet and Glossary The Copper Electrolysis Hands-On Instructional Guide can also be downloaded as a PDF, and contains additional images, a worksheet …

2. Apparatus: Chemicals: Eye protection. Info. Copper is deposited at the cathode as you would expect, but instead of oxygen being given off at the anode, copper(II) ions go into solution. In this worksheet, students will use ideas of reactivity and electrolysis to predict the products formed from the electrolysis of solutions. In this experiment, a U.S. penny acts as the copper source/anode and a U.S. dime serves as the cathode (a dime, versus another penny, makes the movement of copper more obvious). Graphite elctrodes are used.

- Aqueous copper(II) sulphate using carbon electrodes - Aqueous copper (II) sulphate using copper electrode ÿPredict the likely products of the electrolysis of a molten compoundor of an aqueous solution. The setup is the same as before, but there are now four types of ion in the solution. Over the course of 1-2 weeks, the copper ions plate onto the cathode, resulting in a 300-pound sheet of 99.9% pure copper. This worksheet / practical task is designed to step students through the process of the Electrolysis of Copper Sulfate in the laboratory as well as provide them some revision questions to … Second example: electrolysis of solutions, like copper sulfate in water. The copper sulfate example is more complicated, but it is a common experiment, so it's useful to know what happens in outline. The second part of this investigation covers the products formed during the electrolysis of copper sulfate solution using inert (graphite) electrodes. Hydrogen ions and sulphate ions remain in the solution. The setup is the same as before, but there are now four types of ion in the solution. The copper sulfate gives us Cu 2+ and SO 4 2-.

Electrolysis of copper (II) sulfate solution using INERT electrodes Step 3- Students attempt a concept test (pg 13) Teacher explains the electrolysis of copper (II) sulfate solution using reactive electrodes Students explain the phenomena observed using a diagram and writing Students use the PRO structure taught for the concept test Visual Written Written . The net effect is the transfer of copper from electrode X to electrode Y. What Happened: The copper sulfate solution is an electrolyte that conducts electricity from one electrode to the other. Key Words (not all are used in the worksheet but I did write them up on the board) : Electrodes, Anode, Cathode, Electrolysis, Electrolyte, Ion.
How many minutes does it take to plate 0.925 g of silver onto the cathode of an electrolytic cell using a current of 1.55 A? Quantitative analysis when using copper electrodes will be expected. 10.

A simple activity to show how copper can be obtained from a 0.1M Copper Sulphate solution. Two come from the solute (for example, copper sulfate has Cu 2+ and SO 4 2-) and two come from the water; H 2 O breaks down into H + and OH-.

The copper sulfate gives us Cu 2+ and SO 4 2-. Electrolysis of Copper Worksheet. Demonstration of electrolysis of aqueous sodium sulfate (using universal indicator) and of aqueous potassium iodide (using phenolphthalein indicator) with inert electrodes. When the current is flowing, oxidation (loss of electrons) happens at the copper anode, adding copper ions to the solution.
The dilute copper(II) sulphate solution remains the same.

Student worksheets and accompanying PowerPoint covering the five main extraction methods of copper: smelting and electrolysis, electrolysis of copper salt (sulfate) solution, displacement using scrap iron, bioleaching, phytomining Graphite elctrodes are used. The use of copper electrodes illustrates how copper is refined industrially.

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Like all examples of electrolysis, the positive cations are attracted to the cathode and the negative anions are attracted to the anode. 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.
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