Chemical Reactions with Potassium Permanganate

The video tutorial demonstrates a chemical experiment involving potassium permanganate and sodium sulfite. Initially, the purple color of the permanganate ion is visible. Upon adding sodium sulfite, the solution is swirled, leading to a color change as the permanganate ions are reduced to manganese ions, and the sulfite ions are oxidized to sulfate ions. The experiment illustrates the concepts of reduction and oxidation in a clear and observable manner.

What is the initial color of the potassium permanganate solution?

• Green

• Blue

• Purple

• Yellow

What substance is added to the potassium permanganate solution in the experiment?

• Sodium carbonate

• Sodium hydroxide

• Sodium sulfite

• Sodium chloride

What happens to the color of the solution after adding sodium sulfite?

• It turns yellow

• It turns green

• It remains purple

• It loses the purple color

What ions are formed when permanganate ions are reduced?

• Manganese ions

• Chloride ions

• Sodium ions

• Sulfate ions

What happens to the sulfite ions during the reaction?

• They are reduced to sulfate ions

• They form sodium ions

• They are oxidized to sulfate ions

• They remain unchanged