Reactivity of Iron in Copper Sulfate

The video tutorial explains the reaction between iron nails and copper sulfate solution. It begins with an introduction to the reaction, followed by a list of materials required for the experiment. The procedure involves immersing iron nails in copper sulfate solution and observing changes. The nails develop a reddish-brown layer, and the solution's color fades. This is due to a displacement reaction where iron displaces copper, forming iron sulfate and copper metal. The video concludes with a summary of the reaction and its significance.

What is the initial observation when an iron object is placed in copper sulfate solution?

• The object dissolves completely.

• The object and solution change color.

• The solution becomes colorless.

• The solution starts boiling.

Which of the following is NOT required for the experiment?

• Copper sulfate solution

• Iron nails

• Bunsen burner

• Sandpaper

How many iron nails are used in the experiment?

• One

• Two

• Four

• Three

What is observed on the iron nails after being immersed in the copper sulfate solution?

• They remain unchanged.

• They become shiny and smooth.

• They develop a reddish-brown layer.

• They break into pieces.

What happens to the color of the copper sulfate solution after the reaction?

• It turns red.

• It fades away.

• It becomes more blue.

• It turns green.

What type of reaction occurs between iron and copper sulfate?

• Combination reaction

• Decomposition reaction

• Neutralization reaction

• Displacement reaction

Which metal is more reactive in the reaction between iron and copper sulfate?

• Copper

• Both are equally reactive

• Iron

• Neither is reactive

What compound is formed as a result of the reaction?

• Iron sulfate

• Copper oxide

• Copper chloride

• Iron chloride

What is deposited on the iron nails during the reaction?

• Iron oxide

• Copper metal

• Copper sulfate

• Iron metal

What is the main learning outcome of this module?

• Studying decomposition reactions

• Exploring neutralization reactions

• Learning about displacement reactions

• Understanding combination reactions