Question

consider 1kg of water at 1atm. You seal it with a cover such the confined volume...

consider 1kg of water at 1atm. You seal it with a cover such the confined volume is exactly 1L. That is to say, there is no vacuum space if the system is pure water at 1atm. Is the water still in equilibrium with vapor? If so, how to obtain the vapor pressure in this system?

Engineering   Chemical-Engineering   
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Answer #1

Now here let us analyze the problem

Cover has been put on top such such that here is no vacuum space.

At normal temperature, say 25 oC, water has some vapor pressure. Water will continue to vaporize until they come in equilibrium. Due to this some amount of water will definitely vaporize and a layer of vapor will be formed on top of water. Once the temperature is known One can make use of Antoine equation to obtain the saturation pressure of Waste, which will be the, vapor pressure ( for this particular case) of water vapor in equilibrium with water

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