White Phosphorus Combustion Experiment

The video tutorial explains spontaneous combustion using white phosphorus. It begins with dissolving white phosphorus in carbon disulphide, followed by dipping filter paper in the solution. When the paper is waved in the air, it catches fire due to the evaporation of carbon disulphide and the slow oxidation of white phosphorus, which generates heat until it reaches its ignition temperature of 35°C, causing it to burn.

What is the first step in preparing for the spontaneous combustion experiment?

• Dip a filter paper in water

• Heat the white phosphorus

• Dissolve white phosphorus in carbon disulphide

• Dissolve white phosphorus in water

What should you do with the filter paper after dipping it in the solution?

• Dip it in water

• Place it on a hot plate

• Wave it in the air

• Burn it immediately

What happens to the carbon disulphide in the filter paper when waved in the air?

• It turns into water

• It evaporates

• It solidifies

• It changes color

Why does the filter paper burst into flames?

• Because of the evaporation of carbon disulphide

• Because of the presence of water

• Due to slow oxidation of white phosphorus

• Due to rapid oxidation of white phosphorus

At what temperature does white phosphorus reach its ignition point?

• 40 degrees centigrade

• 35 degrees centigrade

• 30 degrees centigrade

• 25 degrees centigrade