Physical Equilibrium - Characterestics

The video tutorial explains physical equilibrium in closed containers, using water and soda bottles as examples. It describes how forward and backward reactions occur at the same rate, maintaining constant properties like vapour pressure and temperature. The concept is illustrated with water at 100°C and carbon dioxide in soda bottles, highlighting the constancy of specific ratios and pressures.

What happens to the rate of evaporation and condensation in a closed container at equilibrium?

• Evaporation stops completely.

• Both rates increase indefinitely.

• Both rates become equal.

• Condensation stops completely.

Which property remains constant during physical equilibrium?

• Volume

• Vapor pressure

• Mass

• Density

In a soda bottle, what remains constant regarding carbon dioxide?

• The amount of sugar in the soda

• The color of the soda

• The ratio of dissolved to gaseous carbon dioxide

• The temperature of the soda

At a constant temperature of 100°C, what happens to the vapor pressure of water?

• It fluctuates randomly.

• It increases gradually.

• It decreases gradually.

• It remains constant.

What is the significance of maintaining a constant temperature in a closed container?

• It keeps the container clean.

• It allows equilibrium to be established.

• It ensures the container does not break.

• It prevents any chemical reactions.