Problem: Calculate the standard free-energy change for the following reaction at 25°C. Standard reduction potentials can be found here. 2Au3+(aq) + 3Cr(s) <--> 2Au(s) + 3Cr2+(aq)

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We are being asked to calculate the standard free-energy change for the given reaction:

2Au3+(aq) + 3Cr(s) <--> 2Au(s) + 3Cr2+(aq)


We are going to the following steps to solve the problem:

Step 1. Separate the two half-cell reaction 

Step 2. Determine the cathode and the anode

Step 3. Determine ΔE°cell

Step 4. Calculate ΔG°cell


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Problem Details

Calculate the standard free-energy change for the following reaction at 25°C. Standard reduction potentials can be found here. 2Au3+(aq) + 3Cr(s) <--> 2Au(s) + 3Cr2+(aq)

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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 Cell Potential concept. If you need more Cell Potential practice, you can also practice Cell Potential practice problems.