Potassium Bromide and Its Properties

The video explores whether potassium bromide (KBr) is an electrolyte. It explains that KBr is an ionic compound composed of a metal and a non-metal, making it soluble in water. When dissolved, KBr dissociates into potassium and bromide ions, allowing the solution to conduct electricity. Potassium forms 1+ ions, while bromine forms 1- ions. The video concludes that KBr is a strong electrolyte because it completely dissociates in water.

What type of compound is potassium bromide (KBr)?

• Covalent compound

• Ionic compound

• Metallic compound

• Molecular compound

Why is potassium bromide expected to dissolve in water?

• Because it is a metallic compound

• Because it is a covalent compound

• Because potassium compounds are generally insoluble

• Because potassium compounds are generally soluble

What happens to KBr when it dissolves in water?

• It forms a gas

• It breaks apart into its ions

• It remains as a solid

• It forms a precipitate

Which group on the periodic table does potassium belong to?

• Group 18

• Group 2

• Group 1

• Group 17

What charge does the bromide ion carry?

• 1-

• 1+

• 2+

• 2-

Why is KBr considered a strong electrolyte?

• Because it partially dissociates in water

• Because it does not dissociate in water

• Because it completely dissociates into ions in water

• Because it forms a weak acid in water