Answer to Question #202062 in Inorganic Chemistry for Moitheri Malelu

Question #202062

Calculate the total amount of energy (in kJ) necessary to raise the temperature of 2.00 L of ethanol (density = 0.7849 g/cm3) from 18 0C to its boiling point (78.3 0C) and then to fully vaporize the liquid. Assume that it is a closed system where no heat exchange with the surroundings take place.

(Given: Cethanol = 2.44 J/g·K; heat of vaporization of ethanol at 78.3 0C = 38.56 kJ/mol.)


1
Expert's answer
2021-06-03T05:29:25-0400

The value of heat is 




Heat required to vaporize  =1315.23kJ


Hence proved.


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