Reaction of Non Metals with Oxygen

Summary

The video demonstrates the reaction of a non-metal (phosphorus) with oxygen. A piece of phosphorus is burned in a china dish, producing white fumes when covered with an inverted gas jar. After adding water to the jar and shaking, the white fumes dissolve. Blue litmus solution is added, and its color changes to red, indicating that the oxide formed (phosphorus oxide) is acidic in nature. This experiment proves that non-metallic oxides are acidic.

Takeaways

• 🔥 Non-metals react with oxygen to form oxides.
• 📄 Phosphorus is used as an example of a non-metal in this experiment.
• 🔥 The phosphorus is burned with the help of a glowing splinter.
• ⚗️ The burning phosphorus releases white fumes, which fill the gas jar.
• 💧 After burning, water is poured into the gas jar to dissolve the white fumes.
• 📘 Blue litmus solution is added to the water in the jar.
• 🔴 The litmus changes color from blue to red, indicating an acidic reaction.
• 🧪 The experiment demonstrates that phosphorus oxide is acidic.
• 🧬 Non-metallic oxides tend to be acidic in nature.
• 🔍 This experiment proves that non-metallic oxides, like phosphorus oxide, are acidic.

Q & A

What happens when phosphorus is burned in a gas jar?

When phosphorus is burned in a gas jar, the jar gets filled with white fumes.

Why is the gas jar covered after burning phosphorus?

The gas jar is covered to trap the white fumes produced when phosphorus burns, allowing further observation.

What is observed when water is added to the gas jar filled with white fumes?

When water is added and shaken, the white fumes dissolve in the water.

What does the addition of blue litmus solution to the water in the jar show?

When blue litmus solution is added, it turns red, indicating that the substance is acidic.

What is the significance of the litmus paper turning red?

The litmus paper turning red shows that the oxide formed from the phosphorus is acidic.

What type of oxide is formed when phosphorus burns?

An acidic oxide is formed when phosphorus burns, as indicated by the change in litmus color.

What does this experiment prove about non-metallic oxides?

This experiment proves that non-metallic oxides, like the oxide of phosphorus, are acidic in nature.

Why is a glowing splinter used in this experiment?

A glowing splinter is used to ignite the phosphorus, initiating the burning process.

Why is phosphorus placed on a china dish for this experiment?

Phosphorus is placed on a china dish because it is a heat-resistant material, safe for high-temperature reactions like burning phosphorus.

What does the white fume indicate in this experiment?

The white fume indicates the formation of phosphorus oxide as a result of the burning process.