Phosphorus Experiment Observations

The video tutorial demonstrates the reaction of non-metals with oxygen using phosphorus. A small piece of phosphorus is burned, producing white fumes that fill an inverted gas jar. When water is added and shaken, the fumes dissolve. Adding blue litmus solution turns it red, indicating the acidic nature of phosphorus oxide. This experiment confirms that non-metallic oxides are acidic.

What is the first step in the experiment involving phosphorus?

• Cover the phosphorus with an inverted gas jar

• Place a small piece of phosphorus on a China Dish

• Burn the phosphorus with a glowing splinter

• Pour water into the gas jar

What happens to the gas jar when phosphorus is burned?

• It gets filled with white fumes

• It turns blue

• It gets filled with water

• It remains empty

What should be done after the gas jar is filled with white fumes?

• Heat the gas jar

• Add blue litmus solution directly

• Pour some water into it and shake

• Cover it with a lid

What is observed when blue litmus solution is added to the dissolved white fumes?

• The solution turns red

• The solution remains blue

• The solution turns green

• The solution turns yellow

What does the change in color of the litmus solution indicate about the nature of phosphorus oxide?

• It is acidic

• It is basic

• It is amphoteric

• It is neutral