Problem: How much heat energy is required to convert 19.6 g of solid ethanol at-114.5°C to gasesous ethanol at 177.9°C? The molar heat of fusion of ethanol is 4.60 kJ/mol and its molar heat of vaporization is 38.56 kJ/mol. Ethanol has a normal melting point of-114.5°C and a normal boiling point of 78.4°C. The specific heat capacity of liquid ethanol is 2.45 J/g•°C and that of gaseous ethanol is 1.43 J/g·°C.

🤓 Based on our data, we think this question is relevant for Professor Halihan's class at OKSTATE.

FREE Expert Solution

View Complete Written Solution
Problem Details

How much heat energy is required to convert 19.6 g of solid ethanol at-114.5°C to gasesous ethanol at 177.9°C? The molar heat of fusion of ethanol is 4.60 kJ/mol and its molar heat of vaporization is 38.56 kJ/mol. Ethanol has a normal melting point of-114.5°C and a normal boiling point of 78.4°C. The specific heat capacity of liquid ethanol is 2.45 J/g•°C and that of gaseous ethanol is 1.43 J/g·°C.