Electrolysis Quiz

What are formed at the cathode during the electrolysis of molten binary ionic compounds?

• Non-metals

• Metals or hydrogen

• Oxygen

• Halogens

During the electrolysis using inert electrodes, where are non-metals formed?

• At the cathode

• In the electrolyte

• At the anode

• None of the above

What is produced at the cathode during the electrolysis of sodium chloride solution?

• Oxygen

• Chlorine

• Sodium

• Hydrogen

Which ions move to the anode in the electrolysis of molten binary ionic compounds?

• Positive ions (cations)

• Negative ions (anions)

• Both positive and negative ions

• No ions move to the anode

What is produced at the anode during the electrolysis of a solution containing halide ions?

• Hydrogen

• Oxygen

• The respective halogen

• Sodium

What happens to Cu²⁺ ions during the electrolysis of copper sulfate solution?

• They are oxidized at the anode

• They remain in the solution unchanged

• They are reduced at the cathode

• They react with hydroxide ions

During the electrolysis of copper sulfate solution, what is produced at the anode?

• Hydrogen gas

• Oxygen gas

• Copper metal

• Sulfate ions

What is the mnemonic used to remember the processes of oxidation and reduction?

• OIL RIG

• RED CAT

• LEO GER

• AN OX

What type of electrodes are typically used when the products of electrolysis are reactive?

• Non-inert electrodes

• Inert electrodes

• Pure copper electrodes

• Impure electrodes

Which type of electrode is used in the purification of copper?

• Inert electrode

• Non-inert electrode

• Reactive electrode

• Impure copper electrode