The following standard reduction potentials have been determined for the chemistry of indium: In3+(aq) + 2e– ------ In+(aq)                                                      E° = –0.40 V In+(aq) + e– -------- In(s)                                                            E° = –0.21 V Calculate the cell potential, E°, and Keq for the disproportion of In+ at 25°C: 3 In+(aq) ------ 2 In(s) + In3+(aq)      E° = +0.19 V

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
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Chapter18: Introduction To Electrochemistry
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Problem 18.18QAP
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  1. The following standard reduction potentials have been determined for the chemistry of indium:

In3+(aq) + 2e– ------ In+(aq)                                                      E° = –0.40 V

In+(aq) + e– -------- In(s)                                                            E° = –0.21 V

Calculate the cell potential, E°, and Keq for the disproportion of In+ at 25°C: 3 In+(aq) ------ 2 In(s) + In3+(aq)     

E° = +0.19 V

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