Equilibrium in Physical Process

The video tutorial discusses various types of equilibrium, focusing on solid-liquid equilibrium. It describes an experiment with solid ice and liquid water in a thermo flask at 273 Kelvin and one atmospheric pressure, where both phases are in equilibrium. The mass of ice and water remains constant, and molecular interactions at the boundary are observed. The rate of phase conversion is equal, maintaining equilibrium. The melting point is defined as the temperature where solid ice and liquid water coexist at one atmospheric pressure.

Which of the following is NOT a type of equilibrium discussed in the introduction?

• Liquid equilibrium

• Solid-gas equilibrium

• Solid-liquid equilibrium

• Gas-gas equilibrium

In the experiment with solid ice and liquid water, what condition is maintained to ensure equilibrium?

• Low temperature

• High humidity

• 273 Kelvin temperature

• High pressure

What happens to the mass of solid ice and liquid water in the flask over time?

• It increases

• It fluctuates

• It remains constant

• It decreases

What process occurs when liquid water molecules are attracted to solid ice molecules?

• Evaporation

• Freezing

• Condensation

• Sublimation

What is the term for the temperature at which solid ice and liquid water coexist at one atmospheric pressure?

• Boiling point

• Freezing point

• Melting point

• Sublimation point