Problem: What is the average current generated in the Cu(s) I Cu 2+(aq) II Fe3+(aq) I Fe(s) electrochemical cell if 50 g of Cu(s) are used up in a 24 hour period?Cu2+ + 2e- → Cu              E°red = +0.22 VFe3+ + 3e- → Fe               E°red = -0.04 V1. 1.76 Amp2. 42.17 Amp3. 13.00 Amp4. 111.85 Amp5. 2.64 Amp

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We’re being asked to calculate the  average current generated in the electrochemical cell if 50 g of Cu(s) are used up in a 24 hour period:

Cu(s) I Cu2+(aq) II Fe3+(aq) I Fe(s)

Cu2+ + 2e- → Cu              E°red = +0.22 V

Fe3+ + 3e- → Fe               E°red = -0.04 V


We’re going to calculate the average current generated using the following steps:

Step 1: Determine which cation (positively charged ion) will be plated out from the solution.
Step 2: Write the reaction.
Step 3: Calculate the average current generated.

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Problem Details

What is the average current generated in the Cu(s) I Cu 2+(aq) II Fe3+(aq) I Fe(s) electrochemical cell if 50 g of Cu(s) are used up in a 24 hour period?
Cu2+ + 2e- → Cu              E°red = +0.22 V
Fe3+ + 3e- → Fe               E°red = -0.04 V

1. 1.76 Amp

2. 42.17 Amp

3. 13.00 Amp

4. 111.85 Amp

5. 2.64 Amp

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Electroplating concept. If you need more Electroplating practice, you can also practice Electroplating practice problems.