Help Fast Change in mass of Water

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SUMMARY

The discussion focuses on calculating the mass of water that vaporizes when transitioning from a high temperature and pressure to 1 atm at 100°C. The user seeks to determine the mass of water remaining after vaporization using specific enthalpy and the initial mass of water in a sealed container. The phase diagram of water is referenced as a tool for understanding the thermodynamic properties involved in this process.

PREREQUISITES
  • Understanding of thermodynamic principles, specifically phase changes.
  • Knowledge of specific enthalpy calculations for water.
  • Familiarity with phase diagrams and their applications.
  • Basic concepts of pressure and temperature relationships in closed systems.
NEXT STEPS
  • Study the thermodynamic properties of water at various pressures and temperatures.
  • Learn how to calculate specific enthalpy changes for phase transitions.
  • Research the use of phase diagrams in thermodynamics for various substances.
  • Explore the concept of boiling point elevation and its implications in sealed systems.
USEFUL FOR

Students and professionals in thermodynamics, chemical engineering, and physical chemistry who need to understand phase transitions and vaporization processes in water under varying conditions.

infinite_gbps
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Help Fast! Change in mass of Water

Hi Everyone,

I kind of need some quick help. If I am at a high temp 'x' and a high pressure 'p' (above 100 C and 1 atm)
in a sealed container then the water will not be boiling. But let say that you open the top. Now the water is exposed to 1 atm and the water will want to boil and vaprize because the temp is above 100 C.

How can I find out how much of the water actually vaporizes during the time it wants to go from temperature 't' to 100C. At 100C it will continue to boil but it won't be violently vaporizing, correct?

I was thinking that I can use the change in enthalpy to figure it out but I got stuck with specific enthalpy. I have the mass of the water before I open the container. I bet you guys/girls can help me figure out the mass of the water when it gets to 100C at 1 atm then I can figure out how much vaporized, correct? I know the volume at temp 't' and pressure 'p' as well for water.

Thanks in advance.
 
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