Experiment Chrome plating a nickel cathode

Aim: To chrome plate a nickel cathode

Materials: nickel-plated  electrode, lead electrode, beaker, chromic acid

Method

1. Set up an electrolytic cell using a nickel plated cathode from this experiment
2. Place 200cm³ of chromic acid solution in a beaker
3. Warm it up to 40°C
4. Pass a current through the solution for about 20 minutes
5. Switch off the current and disconnect the cathode

Observations and results

• The nickel plated cathode is covered by chrome and achieves a glossy finish
• It does adhere well even during polishing
• Chrome shines more than nickel

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