The enthalpy of sublimation of a solid is always ______ than the enthalpy of fusion, and...
The enthalpy of sublimation of a solid is always ______ than the enthalpy of fusion, and the enthalpy of vaporization of a liquid is always ______ than the enthalpy of fusion.
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Greater, greater
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Less, less
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Less, greater
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Greater, less
Homework Answers
In sublimation, the molecules go directly from the solid phase to the gaseous phase. So, it requires greater energy than the energy required in fusion, as at any temperature the energy of gaseous phase is greater than the energy of the liquid phase.
A molecule requires greater amount of energy to go from liquid phase to gaseous phase because the energy of the gaseous phase is very high.
So, again, the enthalpy of vaporization of a liquid is always greater than the enthalpy of fusion.
So,
Greater, greater
Comment if any problem.
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The enthalpy of sublimation of a solid is always ______
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