Electrolysis and Ionic Compounds Concepts

What is the state of ions in a solid ionic compound?

• Free to move

• Dissolved in water

• Locked in a rigid structure

• Able to conduct electricity

Why do solid ionic compounds not conduct electricity?

• They have no free electrons

• Their ions are fixed in position and cannot move

• They are covalent compounds

• They have a high melting point

How can an ionic compound be made to conduct electricity?

• By cooling it to a very low temperature

• By dissolving it in a non-polar solvent

• By heating it until it melts

• By adding a catalyst

What type of ions are typically cations in ionic compounds?

• Non-metal ions

• Halide ions

• Oxide ions

• Metal ions

Which element, besides metals, can also form a cation in an ionic compound?

• Oxygen

• Chlorine

• Hydrogen

• Nitrogen

What are the ions present in molten sodium chloride (NaCl)?

• Sodium atoms and chlorine atoms

• Sodium cations and chloride anions

• Sodium and chlorine molecules

• Sodium and chlorine compounds

What type of reaction occurs at the cathode during electrolysis?

• Oxidation

• Neutralization

• Precipitation

• Reduction

What happens to sodium ions (Na+) at the cathode during the electrolysis of molten sodium chloride?

• They lose electrons and are oxidized to sodium gas

• They gain electrons and are reduced to sodium metal

• They react with water to form sodium hydroxide

• They remain unchanged

What type of reaction occurs at the anode during electrolysis?

• Reduction

• Neutralization

• Precipitation

• Oxidation

What is produced at the anode during the electrolysis of molten sodium chloride?

• Sodium metal

• Hydrogen gas

• Oxygen gas

• Chlorine gas