Electrolysis of Aqueous Solutions Quiz

What is electrolysis?

• A technique for mixing chemicals without reactions.

• A way to cool down substances rapidly.

• A method of heating substances to high temperatures.

• A process of using electricity to break down electrolytes to form elements.

What is produced at the positive electrode during the electrolysis of copper chloride?

• Chlorine

• Copper

• Hydrogen

• Oxygen

Which of the following is a suitable hypothesis for electrolysis?

• A non-metal will be produced at the positive electrode because non-metal ions are negative.

• Metals will always be produced at both electrodes.

• Electrolysis does not produce any gases.

• All solutions produce the same products.

What is the purpose of using inert electrodes in electrolysis?

• To prevent the electrodes from reacting with the electrolyte.

• To increase the temperature of the reaction.

• To speed up the reaction.

• To change the color of the solution.

Which gas test involves a glowing splint relighting?

• Oxygen

• Carbon dioxide

• Hydrogen

• Chlorine

What precaution should be taken when handling copper sulfate solution?

• Keep away from sunlight

• Use a face mask

• Wear gloves

• Store in a freezer

What is the identity of the gas that bleaches litmus paper during electrolysis?

• Chlorine

• Oxygen

• Hydrogen

• Nitrogen

What is a compound?

• A single element in its pure form.

• A type of metal.

• A mixture of gases.

• A substance formed by the chemical union of two or more elements.

Which solution is NOT mentioned as suitable for electrolysis testing?

• Sodium nitrate

• Copper sulfate

• Sodium bromide

• Potassium iodide

What is the harm caused by copper sulfate solution?

• Causes nausea

• Causes skin irritation

• Causes dizziness

• Causes headaches