
Electrolysis Quantitative Aspects

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Others
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9th Grade
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kura duba
Used 1+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Faraday's first law of electrolysis?
The amount of electricity is inversely proportional to the chemical change
Chemical change is not affected by the quantity of electricity
The electrolyte does not play a role in the process
Amount of chemical change is proportional to the quantity of electricity passed through the electrolyte.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calculate the charge (in coulombs) required to deposit 0.5 moles of aluminum from Al3+ ions.
4339.3275 coulombs
4339327.5 coulombs
433932.75 coulombs
500000.25 coulombs
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the current related to the time taken for electrolysis?
The current is inversely proportional to the time taken for electrolysis.
The current has no relation to the time taken for electrolysis.
The current is proportional to the square of the time taken for electrolysis.
The current is directly proportional to the time taken for electrolysis.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain how molar mass can be determined using electrolysis.
By measuring the color change during electrolysis
By counting the number of bubbles produced
By electrolyzing a known quantity of the compound, measuring the electricity passed, and applying Faraday's laws.
By analyzing the smell of the compound after electrolysis
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Write the electrode reactions for the electrolysis of water.
Anode: 2H2O(l) -> H2(g) + 2OH-(aq); Cathode: 2H2O(l) -> O2(g) + 4H+(aq) + 4e-
Anode: 2H2O(l) -> O2(g) + 4H+(aq) + 4e-; Cathode: 2H2O(l) + 2e- -> H2(g) + 2OH-(aq)
Anode: 2H2O(l) -> 2H2(g) + O2(g); Cathode: 2H2O(l) -> 2H2(g) + O2(g)
Anode: 2H2O(l) -> 2H2(g) + O2(g); Cathode: 2H2O(l) -> H2(g) + 2OH-(aq)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Faraday's second law of electrolysis?
Amount of chemical change is directly proportional to the quantity of electricity passed.
The chemical change is proportional to the square of the quantity of electricity passed
The quantity of electricity passed has no effect on the chemical change
The amount of electricity passed is inversely proportional to the chemical change
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a current of 2A is passed through a solution for 3 hours, how many coulombs of charge are transferred?
30000 C
21600 C
25000 C
18000 C
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