Problem: The heat of vaporization of methanol, CH3OH, is 35.2 kJ/mol. Its boiling point is 64.6°C. What is the change in entropy for the vaporization of methanol?

FREE Expert Solution

Heat of vaporization is the amount of heat absorbed by a liquid at its boiling point for phase change from liquid to gas.


The entropy of a liquid increases during the evaporation process since gases have higher entropies than liquids.


The relation between entropy and heat of vaporization is given by:


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Problem Details

The heat of vaporization of methanol, CH3OH, is 35.2 kJ/mol. Its boiling point is 64.6°C. What is the change in entropy for the vaporization of methanol?

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Our tutors have indicated that to solve this problem you will need to apply the Entropy concept. You can view video lessons to learn Entropy. Or if you need more Entropy practice, you can also practice Entropy practice problems.

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