A beaker of water is placed in a closed container. Predict...

Name: Problem 127, Chapter 12: Chemistry
Uploaded: 2020-12-22T21:51:36-08:00
Duration: 5 min 26 s
Channel: Dr. Satish Ingale
Description: 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.

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.

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Closed System Equilibrium

In a closed system, the liquid and vapor phases are in dynamic equilibrium, meaning the rate at which molecules evaporate equals the rate at which they condense. This equilibrium is mainly governed by temperature and is not significantly affected by the system’s volume or the amount of liquid, as long as the system remains saturated.

Vapor Pressure

Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid or solid phase in a closed system. It is a measure of the tendency of molecules to escape from the liquid phase into the gas phase, and is determined solely by the nature of the substance and the temperature of the system.

Temperature Dependence

The vapor pressure of a substance is highly dependent on its temperature. As temperature increases, more molecules have sufficient kinetic energy to escape the liquid phase, causing an increase in vapor pressure. Conversely, lowering the temperature reduces this kinetic energy, thereby decreasing the vapor pressure.

Transcript

Please give Ace some feedback