Enter electrons as e-. Use smallest possible integer coefficients for ALL reactions. If a box is not needed, leave it blank.A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge.Br2(l) + 2Fe2+(aq) 2Br-(aq) + 2Fe3+(aq)The anode reaction is: + + The cathode reaction is: + + In the external circuit, electrons migrate _____fromto the Br-|Br2 electrode _____fromto the Fe2+|Fe3+ electrode.In the salt bridge, anions migrate _____fromto the Fe2+|Fe3+ compartment _____fromto the Br-|Br2 compartment.

The overall reaction of the cell is,2 Fe2+ + Br2 → 2 Fe3+ + 2 Br-Let us first consider the oxidation and reduction half cell reactions. Oxidation:2 Fe2+ → 2 Fe3+ + 2 e-Reduction: Br2 + 2 e- → 2 Br-At anode oxidation take place and at cathode reduction take place. Anodic reaction is - Oxidation:2 Fe2+ → 2 Fe3+ + 2 e-Anodic reaction is - Reduction: Br2 + 2 e- → 2 Br-In an external circuit, the electron migrates from anode to cathode, ie; from Fe2+/Fe3+ electrode to Br-/Br2 electrode. In a voltaic cell, a salt bridge is used to maintain the electrical neutrality of the cell. During the cell reaction, the anodic compartment [Fe2+/Fe3+ ] becomes positively charged (due to the release of the electron), and the cathodic compartment Br-/Br2 becomes negatively charged by accepting this electron. Hence to maintain the electrical neutrality anion migrate from the Br-/Br2 compartment to the Fe2+/Fe3+ compartment in the salt bridge.Answer: (1) In an external circuit, the electron migrates to Br-/Br2 electrode from Fe2+/Fe3+ electrode. (2) In the salt bridge, anions migrate to the Fe2+/Fe3+ compartment from the Br-/Br2 compartment.

Answered: A voltaic cell is constructed in which…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Enter electrons as e^-.

Use smallest possible integer coefficients for ALL reactions.

If a box is not needed, leave it blank.

A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge.

Br₂(l) + 2Fe²⁺(aq) 2Br^-(aq) + 2Fe³⁺(aq)

The anode reaction is:

The cathode reaction is:

In the external circuit, electrons migrate _____fromto the Br^-|Br₂ electrode _____fromto the Fe²⁺|Fe³⁺ electrode.

In the salt bridge, anions migrate _____fromto the Fe²⁺|Fe³⁺ compartment _____fromto the Br^-|Br₂ compartment.

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