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Engineering Chemistry Practice Test: Faraday’s Laws of Electrolysis
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Faraday's laws of electrolysis are quantitative relationships based on the electrochemical research published by Michael Faraday in 1833. First law: Michael Faraday reported that the mass (m) of a substance deposited or liberated at an electrode is directly proportional to the charge (Q; SI units are ampere seconds or coulombs). Second law: Faraday discovered that when the same amount of electric current is passed through different electrolytes connected in series, the masses of the substances deposited or liberated at the electrodes are directly proportional to their respective chemical... Show more
Engineering Chemistry Practice Test: Faraday’s Laws of Electrolysis
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12 Questions

1. Refined bauxite is dissolved in molten cryolite at a temperature slightly below ____________
2. According to Faraday’s second law, the weights of different substances evolved by the passage of the same quantity of electricity are proportional to their _______________
3. Electrochemical equivalent may be defined as the ____________ of the substance deposited by the passage of 1 coulomb of electricity.
4. According to Faraday’s first law of electrolysis, the amount of any substance deposited at the electrode is directly proportional to the quantity of _______________
5. Which of the following factor does not affect ionic mobility?
6. 1 Faraday = _______________
7. Aluminium and its alloys can be given shapes of pipes, tubes, rods, wires, plates or foils.
8. The unit of ionic mobility in SI system is ____________
9. Silver is electrodeposited on a metallic vessel of surface area 800 cm2 by passing a current of 0.2 A for 3 hours. The thickness of silver deposited is ____________
10. The velocity with which an ion moves under a potential gradient of __________ volt/cm in a solution is called ionic mobility.
11. Faraday constant is the amount of electricity present in 100 moles of electrons.
12. The molecular formula of cryolite is ____________

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