Suppose reaction X has a reduction potential of -0.311 V, while reaction Y has a reduction potential of -0.109 V. Which reaction is more likely to run backwards as an oxidation? Reaction X Reaction Y Both are equally likely
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Step 1: The more negative the reduction potential, the less likely the reaction is to proceed as written. Show more…
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Consider these two entries from a fictional table of standard reduction potentials. X2+(aq) + 2e- → X(s) E = 2.40 V Y2+(aq) + 2e- → Y(s) E = 0.31 V Which pair of species will react under standard conditions at 25 °C? X2+ and Y X2+ and Y2+ X and Y X and Y2+
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The standard reduction potential of X is 1.23 V and that of Y is -0.44 therefore X is oxidized by Y
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Predict whether the following reactions would occur spontaneously in aqueous solution at 25°C. Assume that the initial concentrations of dissolved species are all 1.0 M. Show the calculation to support your answer. 2 X(s) + Y2+(aq) -> 2 X+(aq) + Y(s) Y2+(aq) + 2e- -> Y(s) E0 = -0.21 X+ + e- -> X(s) E0 = 0.82 b. If the [X+] = 0.21 M and the [Y2+] = 0.7 M, what is the E for the cell?
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