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This question is about electrolysis - Edexcel - GCSE Chemistry - Question 3 - 2023 - Paper 1
Question 3
This question is about electrolysis. (a) Which statement describes what happens during electrolysis? A atoms are decomposed B ionic compounds are decomposed C m... show full transcript
Worked Solution & Example Answer:This question is about electrolysis - Edexcel - GCSE Chemistry - Question 3 - 2023 - Paper 1
Step 1
Which statement describes what happens during electrolysis?
Answer
The correct answer is B: ionic compounds are decomposed. During electrolysis, an electric current is passed through an ionic compound in a molten or aqueous state, resulting in the decomposition of the ionic compound into its constituent elements or simpler compounds.
Step 2
Use the words from the box to complete the labelling of the diagram in Figure 5.
Answer
In the diagram:
- The anode should be labelled at the positive electrode.
- The cathode should be labelled at the negative electrode.
- The electrolyte is the solution of copper chloride that conducts electricity due to the presence of free ions.