La electrólisis

The video tutorial explains the process of electrolysis, starting with David's early experiments using the first electric battery. It details his work with potassium hydroxide, leading to the discovery of pure potassium. The mechanism of electrolysis is described, focusing on the role of ions and electrodes. Finally, the video highlights the industrial applications of electrolysis, particularly in extracting reactive metals like aluminum.

What was the unexpected result David observed when he first conducted electrolysis on potassium hydroxide?

• The compound solidified

• The solution turned green

• A lilac flame appeared

• No reaction occurred

What is necessary for electrolysis to occur in a metal compound?

• The compound must be in a gaseous state

• The compound must be melted or dissolved

• The compound must be solid

• The compound must be frozen

In electrolysis, where do anions move?

• Towards the cathode

• They remain stationary

• Towards the anode

• Towards the center of the solution

What happens to hydroxide ions at the anode during electrolysis?

• They gain electrons

• They form a solid precipitate

• They release gas bubbles and oxidize

• They dissolve completely

What is one of the main industrial applications of electrolysis today?

• Producing synthetic fibers

• Extracting aluminum

• Creating glass

• Manufacturing plastics