Standard Reduction Potentials at 25 °C Half-reaction Eº(volts) Au³+ + 2e Au+ 1.290 Aut+eAu 1.680 Au³+ + 3e-Au 1.420 In a disproportionation reaction, the same species is oxidized and reduced. Use the data given above to analyze the disproportionation reaction: 3Au+ 2Au + Au³+

Standard Reduction Potentials at 25 °C Half-reaction Eº(volts) Au³+ + 2e Au+ 1.290 Aut+eAu 1.680 Au³+ + 3e-Au 1.420 In a disproportionation reaction, the same species is oxidized and reduced. Use the data given above to analyze the disproportionation reaction: 3Au+ 2Au + Au³+

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

**Standard Reduction Potentials at 25°C**

| Half-reaction | E° (volts) |
|--------------------------------|------------|
| Au³⁺ + 2e⁻ → Au⁺ | 1.290 |
| Au⁺ + e⁻ → Au | 1.680 |
| Au³⁺ + 3e⁻ → Au | 1.420 |

In a disproportionation reaction, the same species is oxidized and reduced. Use the data given above to analyze the disproportionation reaction:

\[ 3\text{Au}^+ \rightleftharpoons 2\text{Au} + \text{Au}^{3+} \]

Will Au⁺ disproportionate in aqueous solution? [ ]

To justify your answer, what is the standard cell voltage for the disproportionation reaction? [ ] V

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