Single Displacement Reaction Experiment

The video tutorial demonstrates a single displacement reaction using copper sulphate and iron nails. It begins with an introduction to the materials needed, followed by the preparation of a copper sulphate solution. The experiment is set up by cleaning iron nails and immersing one in the solution. After 15 minutes, a color change is observed, indicating the presence of Fe2+ ions. The reaction results in a brown coating of copper on the nail, confirming a single displacement reaction where ferrous ions displace copper ions.

Which of the following materials is NOT required for the single displacement reaction experiment?

• Sodium chloride

• Distilled water

• Iron nails

• Copper sulphate

What is the first step in preparing the copper sulphate solution?

• Pour distilled water into a clean beaker

• Stir the solution with a glass rod

• Add iron nails to the beaker

• Clamp the test tube to a stand

Why do we clean the iron nails with sandpaper before immersing them in the copper sulphate solution?

• To make them shiny

• To remove any rust

• To make them greyish in color

• To increase their weight

How long should the test tubes be kept undisturbed after immersing the iron nail?

• 10 minutes

• 15 minutes

• 20 minutes

• 30 minutes

What color does the copper sulphate solution turn after the iron nail is immersed in it?

• Blue

• Yellow

• Red

• Light green

What causes the greenish color in the copper sulphate solution after the reaction?

• Presence of SO4 2- ions

• Presence of Fe2+ ions

• Presence of Cu2+ ions

• Presence of Fe3+ ions

What type of reaction is demonstrated in this experiment?

• Double displacement reaction

• Combination reaction

• Decomposition reaction

• Single displacement reaction