Chemistry · May / June 2024 · Paper 11 · Question 13
5070Electrolysis
The apparatus shown is set up to electroplate a steel key with copper. The key does not get coated with copper. Which change needs to be made to electroplate the key?
- Aincrease the concentration of the aqueous copper(II) sulfate
- Bincrease the electric current
- Creplace the solution with dilute sulfuric acid
- Dreverse the electrical connections
As printed in the paper
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Correct answer: D. reverse the electrical connections
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