Electrolysis of Aqueous Copper Sulfates

The video tutorial covers the electrolysis of aqueous copper sulfate. It begins with an introduction to electrolysis, explaining the process and the components involved, such as ions and electrodes. The tutorial then focuses on the specific case of copper sulfate, predicting the outcomes of the electrolysis process. An experiment is conducted by Liam to test these predictions, observing the production of oxygen gas at the anode and copper deposition at the cathode. The video concludes with a discussion of the results and their alignment with the initial predictions.

What is the primary role of electrolysis in an aqueous solution?

• To decompose the electrolyte using electrical energy

• To dissolve the electrolyte completely

• To increase the temperature of the solution

• To reduce the concentration of ions

Which ions are attracted to the anode during electrolysis?

• Positive hydrogen ions

• Neutral molecules

• Negative non-metal ions

• Positive metal ions

What determines whether metal cations or hydrogen ions are discharged at the cathode?

• The size of the electrodes

• The temperature of the solution

• The reactivity of the metal compared to hydrogen

• The color of the solution

What is the purpose of using inert electrodes in electrolysis?

• To prevent any reaction with the electrolyte

• To change the color of the solution

• To react with the electrolyte

• To increase the conductivity of the solution

In the electrolysis of copper sulfate, which ions are discharged at the anode?

• Hydrogen ions

• Sulfate ions

• Hydroxide ions

• Copper ions

What is the expected observation at the cathode during the electrolysis of copper sulfate?

• Release of hydrogen gas

• Deposition of solid copper

• Formation of water

• Formation of chlorine gas

What did Liam observe at the anode during the experiment?

• Bubbles of hydrogen gas

• Deposition of copper

• Bubbles of oxygen gas

• Formation of water