When a container is filled half-way with an alcohol and sealed, an equilibrium vapor pressure is established..

Question

When a container is filled half-way with an alcohol and sealed, an equilibrium vapor pressure is established between an liuid and its vapor. Which of the following best describes the point at which the equilibrium vapor pressure is established?

When the volume of the liquid equals the volume of the vapor.

When the vapor pressure equals the atmospheric pressure.

When the rate of evaporation equals the rate of condensation.

When the amount of liquid and vapor are equal.

Answer 1

Equilibrium vapor pressure occurs when the rates of evaporation and condensation are equal.