# Problem: Given Cu2+(aq) + 2e- → Cu(s)      E° = 0.337 V Al3+(aq) + 3e- → Al(s)         E° = -1.66 V Na+(aq) + e- → Na(s)          E° = -2.714 V. Which of the following reactions will occur? A) 2Na+(aq) + Cu(s) → Cu2+(aq) + 2Na(s)              E°cell = -3.051 V B) Al(s) + 3Na+(aq) → Al3+(aq) + 3Na(s)                E°cell = -1.054 V C) 2Na(s) + Cu2+(aq) → Cu(s) + 2Na+(aq)              E°cell = 3.051 V D) 2Al3+(aq) + 3Cu(s) → 3Cu2+(aq) + 2Al(s)          E°cell = -1.991 V E) 2Al3+(aq) + 3Cu(s) → 3Cu2+(aq) + 2Al(s)           E°cell = 1.991 V

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###### Problem Details

Given

Cu2+(aq) + 2e- → Cu(s)      E° = 0.337 V

Al3+(aq) + 3e- → Al(s)         E° = -1.66 V

Na+(aq) + e- → Na(s)          E° = -2.714 V.

Which of the following reactions will occur?

A) 2Na+(aq) + Cu(s) → Cu2+(aq) + 2Na(s)              cell = -3.051 V

B) Al(s) + 3Na+(aq) → Al3+(aq) + 3Na(s)                cell = -1.054 V

C) 2Na(s) + Cu2+(aq) → Cu(s) + 2Na+(aq)              cell = 3.051 V

D) 2Al3+(aq) + 3Cu(s) → 3Cu2+(aq) + 2Al(s)          cell = -1.991 V

E) 2Al3+(aq) + 3Cu(s) → 3Cu2+(aq) + 2Al(s)           cell = 1.991 V

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.

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Based on our data, we think this problem is relevant for Professor Randles' class at UCF.