Sodium Fluoride and Electrolytes Concepts

The video explores whether sodium fluoride (NaF) is an electrolyte or a non-electrolyte. It begins by identifying NaF as an ionic compound composed of a metal and a non-metal. The video defines an electrolyte as a substance that dissolves in water to produce ions, which conduct electricity. NaF is found to be soluble in water, dissociating into sodium and fluoride ions, thus conducting electricity. Therefore, NaF is classified as a strong electrolyte. Dr. B concludes by affirming NaF's status as a strong electrolyte.

What type of compound is sodium fluoride (NaF)?

• Metallic compound

• Ionic compound

• Molecular compound

• Covalent compound

What is an electrolyte?

• A substance that does not dissolve in water

• A substance that dissolves in water and produces ions

• A substance that dissolves in non-polar solvents

• A substance that does not conduct electricity

Why is the ability to conduct electricity important for electrolytes?

• It suggests the substance is a gas

• It means the substance is insoluble

• It shows the substance is non-reactive

• It indicates the presence of ions in solution

What happens to sodium fluoride when it dissolves in water?

• It remains as a solid

• It dissociates into sodium and fluoride ions

• It forms a precipitate

• It evaporates

Which ion is formed from sodium in sodium fluoride?

• Na-

• Na+

• F+

• F-

What is the charge of the fluoride ion in sodium fluoride?

• 1-

• 1+

• 2+

• 2-

Why is sodium fluoride considered a strong electrolyte?

• It completely dissociates into ions in water

• It forms a weak acid in water

• It does not dissolve in water

• It partially dissociates in water