At What Point Is the Vapor Pressure of a Liquid

question 75

Multiple Choice

At what point is the vapor pressure of a liquid measured?

• A) When molecules escape from the liquid more rapidly than they are recaptured by the liquid.
• B) When molecules are recaptured by the liquid more rapidly than they escape from the liquid.
• C) When molecules escape and are recaptured at the same rate.
• D) When the liquid has been totally converted to vapor.