# Heat Required to Convert Ethanol to its Vapor Phase

Ethanol, C2H5OH, melts at -114 degrees C and boils at 78 degreesC. The enthalpy of fusion of ethanol is 5.02kj/mol and the enthalpy of vaporization is 38.56kj/mol. The specific heats of solid and liquid ethanol are 0.97J/g-K and 2.3J/g-K respectively. How much heat is required to convert 75.0g of ethanol at -120 degreesC to the vapor phase at 78 degreesC. Please include the conversion and steps so I can understand the problem.

Thank you for your help.

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interest

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You invest $250 in your savings account at the end of each year and earn an average of 6% per year in interest. How much will you have in your savings account at the end of forty years?

Solution.

Consider the first $250, at the ...

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Solution attaches a Word file to show the calculations for working out the necessary heat to convert 75g of ethanol to vapour.