The specific heat of liquid ethanol, C₂H₅OH(l), is 2.46 J/g·°C and the heat of vaporization is 39.3 kJ/mol.The boiling point of ethanol is 78.3 °C.What amount of enthalpy is required to heat 50.0 g of liquid ethanol from 23.0 °C to ethanol vapor at 78.3 °C? A)42.7 kJ B)49.5 kJ C)179 kJ D)1970kJ E)6840 kJ

Question

Quizplus · Accepted Answer

First, calculate the heat required to raise the temperature of ethanol from 23.0 °C to 78.3 °C using q = mcΔT. Then, calculate the heat required for vaporization using q = nΔHvap. Add both values to find the total enthalpy.

The Specific Heat of Liquid Ethanol, C2H5OH(l), Is 2

The Specific Heat of Liquid Ethanol, C₂H₅OH(l), Is 2