vL, the specific volume of saturated liquid water, is a physical property of water that is a function only of the temperature T; you can look up this variation with temperature in the "steam tables." If has a positive value at all temperatures up to the critical temperature (at which it is equal to the specific volume of the saturated vapor).deepanshu_ch said:
Look at above image where completely water is converted into water vapour. Is this case of closed container or open container ?Chestermiller said:
What do you think would happen if you had a single drop of liquid water present in a huge closed container and you heated to raise the temperature? Do you think the drop would not evaporate? Are you ready to do some actual calculations using the equation I derived for a closed container?deepanshu_ch said:
I get itChestermiller said:
That sounds about right to me. I the heating is relatively slow, the system is very close to equilibrium at any time. Even if it is not, once you stop heating, the system will re-equilibrate at a new temperature.deepanshu_ch said:
deepanshu_ch said:
Chestermiller said:
How can be fraction greater than 1Chestermiller said:
?Not so fast. Now consider 1 kg of water in a 1.25 liter container.deepanshu_ch said:
No. We are assuming that the container is infinitely rigid.deepanshu_ch said:
No, heating a sealed container will not necessarily cause all the liquid to convert to vapor. The process depends on the temperature, pressure, and the specific properties of the liquid. As the temperature increases, the vapor pressure of the liquid also increases until it reaches the pressure inside the container, at which point the liquid and vapor will reach an equilibrium.
When a sealed container is heated, the pressure inside generally increases. This is because the molecules of the liquid and vapor gain kinetic energy, causing them to move more rapidly and collide with the walls of the container with greater force, thereby increasing the pressure.
Yes, a sealed container can potentially explode if heated beyond its design limits. As the temperature and pressure inside the container increase, the structural integrity of the container may be compromised, leading to a rupture or explosion if the pressure exceeds the container's tolerance.
It is possible to predict the final state inside a heated sealed container using thermodynamic principles and equations of state, such as the Clausius-Clapeyron equation. These calculations take into account factors like the initial amount of liquid, the volume of the container, and the properties of the liquid to determine the equilibrium state of the system.
Several safety precautions should be taken when heating a sealed container: use containers designed to withstand high pressures, monitor the temperature and pressure closely, employ pressure relief valves, and ensure that the container is not overfilled. Additionally, conducting such experiments in a controlled environment with appropriate safety gear is essential to minimize the risk of accidents.
