Electrolysis

What are the products of the electrolysis of molten sodium chloride?

• Sodium and chlorine gas

• Sodium hydroxide and hydrogen gas

• Sodium chloride and water

• Hydrogen gas and oxygen gas

In an electrolytic cell, which direction do electrons flow?

• From anode to cathode

• From cathode to anode

• From electrolyte to anode

• From electrolyte to cathode

What is the role of the electrolyte in an electrolytic cell?

• To conduct electricity

• To provide a source of electrons

• To act as a catalyst

• To insulate the electrodes

During the electrolysis of copper sulfate using copper electrodes, what happens at the anode?

• Copper is deposited

• Copper dissolves into the solution

• Oxygen gas is released

• Hydrogen gas is released

Which of the following reactions represents oxidation?

What is the main product at the cathode during the electrolysis of aqueous sodium chloride?

• Chlorine gas

• Sodium metal

• Hydrogen gas

• Oxygen gas

In the electrolysis of copper sulfate solution using copper electrodes, what is the main product at the cathode?

• Copper metal

• Oxygen gas

• Hydrogen gas

• Sulfur dioxide

Which of the following is a reduction reaction?

What is the purpose of using an inert electrode in electrolysis?

• To react with the electrolyte

• To prevent the electrode from dissolving

• To increase the rate of electrolysis

• To change the products of electrolysis

In an electrolytic cell, what is the charge of the anode?

• Positive

• Negative

• Neutral

• It varies