Chemical Reaction between Lead Nitrate and Potassium Iodide

The video tutorial demonstrates the reaction between lead nitrate and potassium iodide. It outlines the materials required, including solutions of potassium iodide and lead nitrate, test tubes, a test tube stand, and tongs. The procedure involves mixing the solutions and observing the formation of a yellow precipitate, indicating the formation of lead iodide. The conclusion highlights that the color change signifies a chemical reaction.

What is the main objective of Activity 2?

• To observe the reaction between lead nitrate and potassium iodide

• To measure the temperature change in a reaction

• To test the solubility of different salts

• To determine the pH of a solution

Which of the following is NOT required for the experiment?

• Bunsen burner

• Potassium iodide solution

• Lead nitrate solution

• Test tube stand

What is the first step in the procedure?

• Add potassium iodide solution to the test tube

• Take lead nitrate solution in a test tube

• Heat the test tube

• Shake the test tube vigorously

What is observed when potassium iodide solution is added to lead nitrate solution?

• A colorless solution is formed

• A yellow precipitate is formed

• The solution turns blue

• Bubbles are produced

What does the formation of a yellow precipitate indicate?

• A physical change has occurred

• The reaction is endothermic

• A chemical reaction has taken place

• The solution is neutral