An electrochemical cell consists of a nickel metal electrode immersed in a solution with [Ni 2+ ] = 1.0 M separated by a porous disk from an aluminum metal electrode. a. What is the potential of this cell at 25°C if the aluminum electrode is placed in a solution in which [Al 3+ ] = 7.2 × 10 −3 M ? b. When the aluminum electrode is placed in a certain solution in which [Al 3+ ] is unknown, the measured cell potential at 25°C is 1.62 V. Calculate [Al 3+ ] in the unknown solution. (Assume Al is oxidized.)
An electrochemical cell consists of a nickel metal electrode immersed in a solution with [Ni 2+ ] = 1.0 M separated by a porous disk from an aluminum metal electrode. a. What is the potential of this cell at 25°C if the aluminum electrode is placed in a solution in which [Al 3+ ] = 7.2 × 10 −3 M ? b. When the aluminum electrode is placed in a certain solution in which [Al 3+ ] is unknown, the measured cell potential at 25°C is 1.62 V. Calculate [Al 3+ ] in the unknown solution. (Assume Al is oxidized.)
Solution Summary: The author describes an electrochemical cell with a standard hydrogen electrode and copper metal electrode as the reference electrode for the calculation of standard reduction potential of other electrodes.
An electrochemical cell consists of a nickel metal electrode immersed in a solution with [Ni2+] = 1.0 M separated by a porous disk from an aluminum metal electrode.
a. What is the potential of this cell at 25°C if the aluminum electrode is placed in a solution in which [Al3+] = 7.2 × 10−3M?
b. When the aluminum electrode is placed in a certain solution in which [Al3+] is unknown, the measured cell potential at 25°C is 1.62 V. Calculate [Al3+] in the unknown solution. (Assume Al is oxidized.)
Definition Definition Study of chemical reactions that result in the production of electrical energy. Electrochemistry focuses particularly on how chemical energy is converted into electrical energy and vice-versa. This energy is used in various kinds of cells, batteries, and appliances. Most electrochemical reactions involve oxidation and reduction.
General, Organic, and Biological Chemistry - 4th edition
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell