Copper II Sulfate and Its Properties

The video tutorial explains the chemical behavior of copper sulfate when mixed with water. It starts with an introduction to anhydrous copper sulfate, followed by the formation of copper sulfate pentahydrate when water is added. The tutorial then describes how copper sulfate pentahydrate dissolves in water, breaking into ions. Finally, it discusses the reversibility of this process, where heating can remove water, returning to the anhydrous form.

What is the chemical formula for anhydrous copper II sulfate?

• CuSO4

• CuSO4·5H2O

• Cu2SO4

• CuSO3

What does the 'penta' in copper II sulfate pentahydrate indicate?

• Five oxygen atoms

• Five water molecules

• Five sulfate ions

• Five copper atoms

What happens to copper II sulfate pentahydrate when it is heated?

• It forms a gas

• It dissolves in water

• It becomes anhydrous

• It turns blue

What is the state of copper II sulfate pentahydrate when it is added to water?

• Plasma

• Gas

• Liquid

• Solid

What charge does the sulfate ion carry?

• 2-

• 1-

• 1+

• 2+

What does 'aqueous' mean in a chemical equation?

• Solid state

• Gaseous state

• Liquid state

• Dissolved in water

What ions are formed when copper II sulfate pentahydrate dissolves in water?

• Cu2+ and SO4 2-

• Cu+ and SO3 2-

• Cu+ and SO4 2-

• Cu2+ and SO3 2-

What happens to the water molecules in copper II sulfate pentahydrate if left out for a while?

• They become liquid

• They form a solid

• They evaporate

• They turn into gas

What is the result of heating copper II sulfate pentahydrate?

• Formation of a new compound

• Formation of a gas

• Conversion to anhydrous copper II sulfate

• Dissolution in water

What is the process called when copper II sulfate pentahydrate loses its water molecules?

• Sublimation

• Hydration

• Dehydration

• Dissolution