
Electroplating and Electrolytic Cells
Interactive Video
•
Chemistry
•
10th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of the electrolytic cell in the context of the video?
To create a magnetic field
To separate water into hydrogen and oxygen
To electroplate a ring with chromium
To generate electricity
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an electrolytic cell, where does oxidation occur?
In the solution
At the cathode
On the surface of the ring
At the anode
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to Cr3+ ions at the ring during the electroplating process?
They are reduced to form pure chromium
They dissolve in the solution
They are oxidized to form Cr2+
They form a gas
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the mass change in chromium during the electroplating process?
It helps calculate the total charge transferred
It shows the efficiency of the cell
It indicates the amount of chromium lost as gas
It measures the temperature change
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the number of moles of chromium calculated from its mass?
By adding the mass to the molar mass
By multiplying the mass by Avogadro's number
By dividing the mass by the atomic number
By dividing the mass by the molar mass
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the charge of a single electron used in the calculations?
1.0 x 10^-18 coulombs
6.02 x 10^23 coulombs
9.1 x 10^-31 coulombs
1.6 x 10^-19 coulombs
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What constant is used to convert moles of electrons to the number of electrons?
Faraday's constant
Boltzmann's constant
Avogadro's number
Planck's constant
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