question (a) complete 3 Two galvanic cells can be described as follows.Cell A: One electrode consists of a piece of cadmium dipping into a cadmium sulfate solution; it isconnected by a salt bridge to another electrode which consists of a strip of magnesium metal dipping intoa magnesium sulfate solution. The magnesium is the negative electrode.Cell B: One electrode consists of a copper wire dipping into a copper sulfate solution; it is connected by asalt bridge to a solution containing both V²+ and V³+ ions (along with sulfate ions). A piece of platinum wiredips into this solution. The platinum wire is the negative electrode.aFor each cell draw a diagram showing what it would look like in the laboratory. Include some form ofexternal circuit (such as a torch bulb or a voltmeter).b For each cell write the electrode reactions, and hence the overall reaction, that occur as the cellgenerates electricity.CShow on your diagram the direction of flow of electrons in the external circuit and the migration of ionswithin each cell.d Identify the anode and cathode in each cell.

Answered: a For each cell draw a diagram showing…

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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question (a) complete

3 Two galvanic cells can be described as follows.
Cell A: One electrode consists of a piece of cadmium dipping into a cadmium sulfate solution; it is
connected by a salt bridge to another electrode which consists of a strip of magnesium metal dipping into
a magnesium sulfate solution. The magnesium is the negative electrode.
Cell B: One electrode consists of a copper wire dipping into a copper sulfate solution; it is connected by a
salt bridge to a solution containing both V²+ and V³+ ions (along with sulfate ions). A piece of platinum wire
dips into this solution. The platinum wire is the negative electrode.
a
For each cell draw a diagram showing what it would look like in the laboratory. Include some form of
external circuit (such as a torch bulb or a voltmeter).
b For each cell write the electrode reactions, and hence the overall reaction, that occur as the cell
generates electricity.
C
Show on your diagram the direction of flow of electrons in the external circuit and the migration of ions
within each cell.
d Identify the anode and cathode in each cell.

Expert Solution

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A Galvanic cell is an electrochemical cell which converts the chemical energy produced in a spontaneous redox reaction into electrical energy.

A Galvanic cell can be made of a combination of different half-cells where each half-cell consists of a metallic electrode dipped into an electrolyte solution. Now two metallic electrodes are joined by a metallic wire externally, and the electrolytes of the two half cells are connected internally through a salt bridge. Sometimes, both electrodes dip in the same electrolyte solution and in such cases, a salt bridge is not required. The role of the salt bridge is to allow the movement of ions from one solution to the other without actually mixing them. Moreover, they also maintain the electrical neutrality of the solutions in the two half-cells.

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