Quantitative Aspects of Electrolysis Quiz

Which of the following is the correct unit for measuring electric charge?

• A) Ampere

• B) Coulomb

• C) Volt

• D) Ohm

What is the formula to calculate the amount of substance deposited during electrolysis?

• A) (Mass = Q/F)

• B) (Mass = Q/nF)

• C) (Mass = nF/Q)

• D) (Mass = F/Q)

If 96500 Coulombs of charge is passed through a solution of silver nitrate, how many moles of silver are deposited?

• A) 0.5 moles

• B) 1 mole

• C) 2 moles

• D) 3 moles

Which law states that the mass of a substance produced at an electrode during electrolysis is proportional to the quantity of electricity passed?

• A) Faraday's First Law

• B) Faraday's Second Law

• C) Ohm's Law

• D) Kirchhoff's Law

What is the charge on one mole of electrons, also known as Faraday's constant?

• A) 1.6 x (10^{-19}) C

• B) 6.02 x (10^{23}) C

• C) 9.65 x (10^4) C

• D) 1.0 x (10^3) C

During the electrolysis of water, what volume of oxygen gas is produced when 2 moles of electrons are passed through the solution?

• A) 11.2 L

• B) 22.4 L

• C) 5.6 L

• D) 44.8 L

Which of the following metals is typically extracted using electrolysis?

• A) Iron

• B) Copper

• C) Aluminium

• D) Zinc

In the electrolysis of molten sodium chloride, what is produced at the cathode?

• A) Sodium metal

• B) Chlorine gas

• C) Hydrogen gas

• D) Oxygen gas

How many Coulombs are required to deposit 1 mole of copper (Cu) from a solution of copper(II) sulfate (CuSO4)?

• A) 96,500 C

• B) 193,000 C

• C) 48,250 C

• D) 24,125 C

What is the relationship between the amount of substance deposited and the current in electrolysis?

• A) Directly proportional

• B) Inversely proportional

• C) No relationship

• D) Exponentially proportional