Question detail
Describe the process of obtaining copper from solutions of copper compounds by electrolysis.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using the Earth's resources and obtaining potable water
Question
Describe the process of obtaining copper from solutions of copper compounds by electrolysis.
Answer
In the electrolysis process, an electric current is passed through a solution containing copper ions. Copper ions migrate to the cathode, where they gain electrons and are deposited as solid copper. At the anode, copper is oxidized, releasing copper ions back into the solution.
Explanation
A strong answer should directly address the approved learning objective to describe how copper can be obtained from solutions of copper compounds by electrolysis. (HT only). This question belongs to Alternative methods of extracting metals within Using the Earth's resources and obtaining potable water, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to HT only, and keeps the wording specific to AQA GCSE revision.
Common mistake
Confusing Electrolysis with Other Methods
Students often confuse electrolysis with other methods of copper extraction, such as displacement or reduction with carbon.
To fix this, students should focus on the specific process of electrolysis, understanding that it involves using an electric current to separate copper ions from a solution.
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