Equilibrium and Temperature Effects on Nitrogen Dioxide and Dinitrogen Tetroxide

The video explains the properties of nitrogen dioxide, a brown gas, and its equilibrium with dinitrogen tetroxide. Cooling the mixture with liquid nitrogen shifts the equilibrium towards colorless dinitrogen tetroxide crystals. Heating above 150°C shifts the equilibrium back to nitrogen dioxide, making the gas appear almost black. However, heating in a thin-walled glass vessel poses safety risks.

What color does nitrogen dioxide exhibit?

• Red

• Blue

• Brown

• Green

What is the role of liquid nitrogen in the gas mixture?

• To heat the mixture

• To cool the mixture

• To change the color of the mixture

• To increase the pressure of the mixture

At what temperature does the equilibrium favor dinitrogen tetroxide?

• 100 degrees Celsius

• 0 degrees Celsius

• Minus 200 degrees Celsius

• Minus 100 degrees Celsius

What happens to the gas when the equilibrium shifts towards nitrogen dioxide?

• It appears almost black

• It becomes colorless

• It becomes a liquid

• It turns green

Why is it hazardous to heat the gas in a thin-walled glass vessel?

• The vessel might become too cold

• The vessel might explode

• The vessel might change color

• The vessel might melt