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A liquid can exist only : [1994]
- a)between triple point and critical temperature
- b)at any temperature above the melting point
- c)between melting point and critical temperature
- d)between boiling and melting temperature.
Correct answer is option 'D'. Can you explain this answer?
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A liquid can exist only : [1994]a)between triple point and critical te...
A substance exists as a liquid above its m. pt. and below its b. pt.
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A liquid can exist only : [1994]a)between triple point and critical te...
Explanation:
Boiling and Melting Temperature:
- A liquid can exist only between its boiling and melting temperature.
- Below the melting temperature, the substance exists in a solid state, while above the boiling temperature, it exists in a gaseous state.
Boiling Temperature:
- The boiling temperature is the temperature at which a substance changes from a liquid to a gas at a given pressure.
- Above the boiling temperature, the substance exists as a gas.
Melting Temperature:
- The melting temperature is the temperature at which a substance changes from a solid to a liquid.
- Below the melting temperature, the substance exists as a solid.
Existence of Liquid:
- The liquid state exists between the boiling and melting temperatures because at this temperature range, the substance is in a state where intermolecular forces are balanced.
- The molecules have enough kinetic energy to overcome the attractive forces holding them together (in a solid state) but not enough to break free and escape into the gas phase.
- Therefore, a liquid can exist only between its boiling and melting temperatures.
Therefore, the correct option is D - between boiling and melting temperature.
Boiling and Melting Temperature:
- A liquid can exist only between its boiling and melting temperature.
- Below the melting temperature, the substance exists in a solid state, while above the boiling temperature, it exists in a gaseous state.
Boiling Temperature:
- The boiling temperature is the temperature at which a substance changes from a liquid to a gas at a given pressure.
- Above the boiling temperature, the substance exists as a gas.
Melting Temperature:
- The melting temperature is the temperature at which a substance changes from a solid to a liquid.
- Below the melting temperature, the substance exists as a solid.
Existence of Liquid:
- The liquid state exists between the boiling and melting temperatures because at this temperature range, the substance is in a state where intermolecular forces are balanced.
- The molecules have enough kinetic energy to overcome the attractive forces holding them together (in a solid state) but not enough to break free and escape into the gas phase.
- Therefore, a liquid can exist only between its boiling and melting temperatures.
Therefore, the correct option is D - between boiling and melting temperature.
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A liquid can exist only : [1994]a)between triple point and critical temperatureb)at any temperature above the melting pointc)between melting point and critical temperatured)between boiling and melting temperature.Correct answer is option 'D'. Can you explain this answer?
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