Sodium Fluoride and Electrolytes

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?

• Covalent compound

• Ionic compound

• Metallic compound

• Molecular compound

What is an electrolyte?

• A substance that does not conduct electricity

• A substance that dissolves in water and produces ions

• A substance that dissolves in non-polar solvents

• A substance that does not dissolve in water

Why does an electrolyte conduct electricity?

• Because it absorbs light

• Because it evaporates quickly

• Because it produces ions in solution

• Because it forms a solid structure

What happens when sodium fluoride dissolves in water?

• It remains unchanged

• It forms a precipitate

• It forms a gas

• It dissociates into sodium and fluoride ions

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+

• 2+

• 2-

• 1-

Why is sodium fluoride considered a strong electrolyte?

• Because it completely dissociates into ions in water

• Because it does not dissolve in water

• Because it forms a weak acid

• Because it partially dissociates in water