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Justify each answer by appropriate calculations. Assume that each reaction occurs at standard electrochemical conditions.(See directions preceding Exercise 58.) Which of the following reactions are spontaneous in voltaic cells under standard conditions?(a) (b) \mathrm{Zn}(\mathrm{CN})_{4}^{2-}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s})+\mathrm{CrO}_{4}{ }^{2-}(\mathrm{aq})\mathrm{MnO}_{2}(\mathrm{~s})+4 \mathrm{H}^{+}(\mathrm{aq})+\mathrm{Sr}(\mathrm{s}) \longrightarrow(d) 2 \mathrm{HOCl}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{~S}(\mathrm{aq})+\mathrm{Zn}(\mathrm{s})$
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Question Text | Justify each answer by appropriate calculations. Assume that each reaction occurs at standard electrochemical conditions.(See directions preceding Exercise 58.) Which of the following reactions are spontaneous in voltaic cells under standard conditions?(a) (b) \mathrm{Zn}(\mathrm{CN})_{4}^{2-}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s})+\mathrm{CrO}_{4}{ }^{2-}(\mathrm{aq})\mathrm{MnO}_{2}(\mathrm{~s})+4 \mathrm{H}^{+}(\mathrm{aq})+\mathrm{Sr}(\mathrm{s}) \longrightarrow(d) 2 \mathrm{HOCl}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{~S}(\mathrm{aq})+\mathrm{Zn}(\mathrm{s})$ |
Topic | All topics |
Subject | Chemistry |
Class | Class 11 |