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20. Which one of the following reactions is spontaneous (in the direction given) under standard e...

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20. Which one of the following reactions is spontaneous (in the direction given) under standard electrochemical conditions? +
20. Which one of the following reactions is spontaneous (in the direction given) under standard electrochemical conditions? +2Br- Mg+ Br2 What is the cell potential for a cell constructed by immersing a strip of manganese in a 1. M MnSO4 solution and a strip of iron in a 1.0 M FesO4 solution and completing the circuit by a wire and a salt bridge? 21. b. +1.62 V c. -0.74 V d. +0.74 V e. +1.21 v A voltaic cell is constructed by immersing a strip of copper metal in 1.0 M CuSO4 solution and a strip of aluminum in 0.50 M Al2(SO4)3 solution. A wire and a salt bridge complete the circuit. The aluminum strip loses mass, and the concentration of aluminum ions in the solution increases. The copper electrode gains mass, and the concentration of copper ions decreases. What is the cell potential? a. +1.28 V 22. b. +2.00 V c. +2.34 V d. +2.50 V e. +3.66 V
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