Electrolysis Of Molten Compounds

The video explains electrolysis, a process where ionic compounds are decomposed into elements using electricity. It covers the electrolysis of molten sodium chloride and lead bromide, detailing the reactions at the electrodes. The video also highlights the industrial applications of electrolysis, such as extracting aluminum from aluminum oxide.

What is a necessary condition for an ionic solid to conduct electricity?

• It must be mixed with a metal.

• It must be cooled to a solid state.

• It must be heated until it melts.

• It must be dissolved in water.

During the electrolysis of molten sodium chloride, what happens at the cathode?

• Sodium ions lose electrons to form sodium atoms.

• Sodium ions gain electrons to form sodium atoms.

• Chlorine gas is produced.

• Chloride ions gain electrons to form chlorine atoms.

What is the role of inert electrodes in electrolysis?

• They ensure the electrodes do not react with the electrolyte.

• They participate in the chemical reaction.

• They prevent the reaction from occurring.

• They increase the speed of the reaction.

In the electrolysis of lead bromide, what is observed at the anode?

• Bromine atoms gain electrons.

• A brown gas is released.

• Lead ions gain electrons.

• Silvery lead forms.

Which industrial process is an example of electrolysis?

• Production of sulfuric acid.

• Extraction of aluminum from aluminum oxide.

• Refining of petroleum.

• Extraction of iron from iron ore.