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A voltaic cell has been constructed with a nickel metal electrode in Ni2*(aq) in one half-cell and a chromium metal electrode in Cr3t(aq) in the other half-cell. The two half-cells have a saturated KCI bridge between them and an external wire connecting the metal electrodes completing the circuit. Where does oxidation take place and what is the oxidation half-reaction? OA Oxidation takes place in the nickel half-cell: Ni(s) - Ni2+(ag) + 2 e- O B. Oxidation takes place in the nickel half-cell: Ni2*(aq) + 2 e- - Ni(s) OC Oxidation takes place in the chromium half-cell: Cr3*(aq) + 3 e- + Cr(s) Op. Oxidation takes place in the chromium half-cell: Cr(s) + Cr3+(ag) + 3 e-

A voltaic cell has been constructed with a nickel metal electrode in Ni2*(aq) in one half-cell and a chromium metal electrode in Cr3t(aq) in the other half-cell. The two half-cells have a saturated KCI bridge between them and an external wire connecting the metal electrodes completing the circuit. Where does oxidation take place and what is the oxidation half-reaction? OA Oxidation takes place in the nickel half-cell: Ni(s) - Ni2+(ag) + 2 e- O B. Oxidation takes place in the nickel half-cell: Ni2*(aq) + 2 e- - Ni(s) OC Oxidation takes place in the chromium half-cell: Cr3*(aq) + 3 e- + Cr(s) Op. Oxidation takes place in the chromium half-cell: Cr(s) + Cr3+(ag) + 3 e-

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 77AP
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A voltaic cell has been constructed with a nickel metal electrode in Ni2*(aq) in one half-cell and a chromium metal electrode in Cr3+(aq) in the other half-cell. The two half-cells have a saturated KCI bridge between them and an external wire connecting the metal electrodes completing the circuit. Where does oxidation take place and what is the oxidation half-reaction? OA Oxidation takes place in the nickel half-cell: Ni(s) - Ni2*(ag) + 2 e- O B. Oxidation takes place in the nickel half-cell: Ni2*(ag) + 2 e-- Ni(s) O. Oxidation takes place in the chromium half-cell: Cr*(ag) + 3 e- + Cr(s) O D. Oxidation takes place in the chromium half-cell: Cr(s) -+ Cr*(ag) + 3 e-
Transcribed Image Text:A voltaic cell has been constructed with a nickel metal electrode in Ni2*(aq) in one half-cell and a chromium metal electrode in Cr3+(aq) in the other half-cell. The two half-cells have a saturated KCI bridge between them and an external wire connecting the metal electrodes completing the circuit. Where does oxidation take place and what is the oxidation half-reaction? OA Oxidation takes place in the nickel half-cell: Ni(s) - Ni2*(ag) + 2 e- O B. Oxidation takes place in the nickel half-cell: Ni2*(ag) + 2 e-- Ni(s) O. Oxidation takes place in the chromium half-cell: Cr*(ag) + 3 e- + Cr(s) O D. Oxidation takes place in the chromium half-cell: Cr(s) -+ Cr*(ag) + 3 e-
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