why does the boundary between liquid phase and gaseous phase disappear on heating a liquid upto critical temperature in a closed vessel ? In this condition what will be the state of the substance ?
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Answer:
the boundary b/w gaseous and liquid state disappers on heating in closed vessel because on heating the particles of liquid and gaseous state comes in a state of motion. in a closed vessel there is no space of movement of particles. hence their boundaries get disappeared
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The boundary between liquid phase and gaseous phase disappear on heating a liquid up to critical temperature in a closed vessel because on increase in kinetic energy of the molecules. In this condition, the state of substance will be vapor phase.
Explanation:
- A temperature at and above which vapor state of a substance cannot be liquefied irrespective of the pressure applied to it is known as critical temperature.
- When the vessel is closed then due to the heat supplied to the vessel, molecules present within it tend to gain the kinetic energy due to which there occurs more number of collisions.
- As a result, the boundary between liquid phase and gaseous phase disappear on heating a liquid up to critical temperature. Also, as the vapor is not able to be liquefied so, it will exist as in vapor state only.
Learn more about critical temperature:
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