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 (b) complete all part
![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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F58ddc134-1584-4352-8f3e-6409cfdada9b%2Fe588b21d-3036-4a20-8ee0-c6b69b26811f%2Ffbqad2g_processed.png&w=3840&q=75)
Transcribed Image Text: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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Step 1
b) An electrochemical cell that converts the chemical energy of spontaneous redox reactions into electrical energy is known as a galvanic cell or voltaic cell.
Now, in a galvanic cell, oxidation occurs at the anode and reduction occurs at the cathode. Thus, the negative electrode is an anode and the positive electrode is a cathode.
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