Electrolysis Quantitative Aspects

Electrolysis Quantitative Aspects

9th Grade

20 Qs

quiz-placeholder

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Electrolysis Quantitative Aspects

Electrolysis Quantitative Aspects

Assessment

Quiz

Others

9th Grade

Medium

Created by

kura duba

Used 1+ times

FREE Resource

20 questions

Show all answers

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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