Electrolysis of Solutions Quiz

In electrolysis, what is the positive electrode called?

• Cathode

• Anode

• Ion

• Solution

Which of the following states does not allow electrolysis to occur?

• Molten

• Solution

• Solid

• Liquid

Which element is produced at the cathode during the electrolysis of copper (+2) oxide?

• Oxygen

• Copper

• Fluorine

• Potassium

Which product is formed at the cathode during the electrolysis of magnesium fluoride?

• Magnesium

• Fluorine

• Oxygen

• Potassium

What is required when an electrolyte has to be molten?

• Little energy

• Lots of energy

• No energy

• Moderate energy

Why is graphite commonly used as an inert electrode?

• It is expensive

• It is reactive

• It is conductive and unreactive

• It is heavy

If the metal is more reactive than hydrogen, what is produced at the cathode?

• The metal itself

• Oxygen gas

• Hydrogen gas

• Carbon dioxide

Which of the following metals will not be produced at the cathode in electrolysis of solutions?

• Copper

• Silver

• Gold

• Sodium

Which metal is less reactive than hydrogen and is produced at the cathode?

• Copper

• Sodium

• Lithium

• Potassium

What is the main product formed at the anode during the electrolysis of sodium chloride solution?

• Chlorine gas

• Sodium metal

• Hydrogen gas

• Oxygen gas