Difference between revisions of "GCSE Chemistry Required Practical: Electrolysis of a Solution"
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==Key Stage 4== | ==Key Stage 4== | ||
===Meaning=== | ===Meaning=== | ||
| − | Perform an [[electrolysis]] experiment to | + | Perform an [[electrolysis]] experiment to observe what happens when an [[aqueous]] [[solution]] is [[electrolysis|electrolysed]]. |
===Method=== | ===Method=== | ||
Revision as of 17:14, 8 April 2019
Key Stage 4
Meaning
Perform an electrolysis experiment to observe what happens when an aqueous solution is electrolysed.
Method
- Pour 50ml of Copper (II) Chloride solution into a 100ml beaker.
- Place two Carbon electrodes held apart from one another by an electrical insulator.
- Attach a direct current power pack to the electrodes using wires and crocodile clips.
- Set the potential difference to 4 Volts.
- Record your observations of changes at each electrode. You may also use a pH Indicator paper next to the anode but above the solution and note any colour change.
- After 5 minutes turn off the power pack and remove the cathode to observe whether any changes have taken place.
- Repeat this experiment for the following solutions; Copper (II) Sulphate, Sodium Chloride and Sodium Sulphate.