For a voltaic cell based on the reaction below, which statement is correct? Zn(s)+Br2(aq)→Zn2*(aq)+2Br (aq) The half-reaction at the cathode is Zn2*(aq)+2e¯→Zn(s). The half-reaction at the anode is 2Br"(aq)→Br2(aq)+2e". Bromine oxidizes zinc. Bromide is the reducing agent.

For a voltaic cell based on the reaction below, which statement is correct? Zn(s)+Br2(aq)→Zn2(aq)+2Br (aq) The half-reaction at the cathode is Zn2(aq)+2e¯→Zn(s). The half-reaction at the anode is 2Br"(aq)→Br2(aq)+2e". Bromine oxidizes zinc. Bromide is the reducing agent.

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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Concept explainers

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.

Question

20 of 48
For a voltaic cell based on the reaction below, which statement is correct? Zn(s)+Br2(aq)→Zn2*(aq)+2Br"(aq)
The half-reaction at the cathode is Zn2*(aq)+2e-→Zn(s).
The half-reaction at the anode is 2Br (aq)→BR2(aq)+2e".
Bromine oxidizes zinc.
Bromide is the reducing agent.
21 of 48
What is the maximum standard voltage possible for a voltaic cell using potassium and aluminum? (E° for
K*=-2.93 V; AI3+=-1.66 V)
-1.27 V
+1.27 V
+4.59 V
-4.59 V

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