Interactive quiz: Electrolysis of Water

What is the purpose of adding sulfuric acid to distilled water during electrolysis?

• To cool down the water

• To change the color of the water

• To increase the electrical conductivity

• To make the water taste better

What type of electrodes are used in the Hofmann's voltmeter?

• Copper electrodes

• Iron electrodes

• Platinum electrodes

• Aluminum electrodes

What gas is produced at the cathode during the electrolysis of acidified water?

• Carbon Dioxide

• Nitrogen

• Oxygen

• Hydrogen

Which ions are discharged at the cathode during the electrolysis process?

• Hydrogen ions

• Hydroxyl ions

• Oxygen ions

• Sulfate ions

What is the overall result of the electrolysis of water?

• Water turns into acid

• Water evaporates

• Water decomposes into hydrogen and oxygen gas

• Water freezes