A student investigated the electroplating of a metal with nickel - VCE - SSCE Chemistry - Question 11 - 2016 - Paper 1
Question 11
A student investigated the electroplating of a metal with nickel. The following is her report.
Electroplating a brass key with nickel
Aim
To investigate whether Fa... show full transcript
Worked Solution & Example Answer:A student investigated the electroplating of a metal with nickel - VCE - SSCE Chemistry - Question 11 - 2016 - Paper 1
Step 1
Aim
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Answer
To determine whether Faraday's laws apply to the electroplating of a brass key with nickel.
Step 2
Procedure Steps
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Answer
The setup, which includes the brass key placed in the electrolyte solution and connected to the Ni electrode, is prepared diligently.
The current is activated for 20 minutes, while monitoring both current and voltage.
After time elapses, the key is removed, dried, and weighed. This process is repeated for additional keys.
Step 3
Results Analysis
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Answer
Each trial shows a different mass of nickel deposited which corresponds with the predicted mass according to Faraday’s laws, indicating a relationship between electric current and the amount of nickel plated.
Step 4
Evaluating Faraday’s Laws
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Answer
The trials display variances in results, showing that further trials yield more reliable data in support of Faraday’s law,
which posits that the mass of metal deposited correlates directly to the charge passed through the electrolyte.
