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High Quality Content by WIKIPEDIA articles! The enthalpy of vaporization, (symbol hvap), also known as the heat of vaporization or heat of evaporation, is the energy required to transform a given quantity of a substance into a gas.It is often measured at the normal boiling point of a substance; although tabulated values are usually corrected to 298 K, the correction is often smaller than the uncertainty in the measured value.The heat of vaporization is temperature-dependent, though a constant heat of vaporization can be assumed for small temperature ranges and below Tr1.0. The heat of vaporiza...
High Quality Content by WIKIPEDIA articles! The enthalpy of vaporization, (symbol hvap), also known as the heat of vaporization or heat of evaporation, is the energy required to transform a given quantity of a substance into a gas.It is often measured at the normal boiling point of a substance; although tabulated values are usually corrected to 298 K, the correction is often smaller than the uncertainty in the measured value.The heat of vaporization is temperature-dependent, though a constant heat of vaporization can be assumed for small temperature ranges and below Tr1.0. The heat of vaporization diminishes with increasing temperature and it vanishes completely at the critical temperature (Tr=1) because above the critical temperature the liquid and vapor phases no longer co-exist.
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