Chemistry Practice Problems Heating and Cooling Curves Practice Problems Solution: How much heat energy is required to convert 19.6 g...

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

Solution: 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.

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.

Solution

Solution BlurView Complete Written Solution