A beaker of water is placed in a closed container. Predict the effect on the vap

Question

A beaker of water is placed in a closed container. Predict the effect on the vapor pressure of the water when (a) its temperature is lowered, (b) the volume of the container is doubled, (c) more water is added to the beaker. These nonpolar molecules have the same number and type of atoms. What are the molecular formulas for each? Which one would you expect to have a higher boiling point and why? What is viscosity? What is the relationship between the intermolecular forces that exist in a liquid and its viscosity? Wet clothes dry more quickly on a hot. dry day than on a

Explanation / Answer

Vapor pressure of a pure component is mainly affected by its temperature. Neither the volume nor does its quantity affect the vapor pressure in any way. With increase in temperature, vapor pressure increases and with decrease in temperature the vapor pressure decreases. So,

a) When temperature is lowered, vapor pressure decreases. b) When volume is doubled, the vapor pressure remains unaffected. c When the amount of water is added more, vapor pressure remains unaffected.

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