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Why are heat transfers associated with phase changes known as latent or "hidden" heats?


Heat absorbed or released in a phase change is measured in kJ while temperature is measured in °C.

The enthalpy of vaporization and enthalpy of condensation values for a substance add to zero.

The enthalpy change values for pure substances tend to be small.

The heat absorbed or released by a phase change does not cause a temperature change.

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Heat transfers associated with phase changes known as latent or "hidden" heats because heat absorbed or released in a phase change is measured in kJ while temperature is measured in °C.


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