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Question

For any substance, why does the temperature remain constant during the change of state?

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Solution

The constant temperature during the change of state:

  • The heat that is been supplied to any substance, during the process of phase transformation, that involves no change in temperature is called latent heat.
  • This latent heat completely utilizes itself to bring about the transformation of any phase or state of a system.
  • The heat is being used up in breaking the bond or the intermolecular forces within the system.
  • As the temperature of the substance remains equal to the latent heat of transformation, hence the substance maintains its constant temperature.

Hence, for any substance, the temperature remains constant during the change of state because the heat given to the substance is being used up in the phase change process and maintains the temperature as it is.


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