Question

What is the enthalpy of vaporization of water if it takes 40 kJ of energy to vaporize 20 g of water at 100°C?

Answer 1

To calculate the enthalpy of vaporization, we can use the formula:Enthalpy of vaporization = Energy required to vaporize / Mass of water vaporizedGiven that it takes 40 kJ of energy to vaporize 20 g of water at 100C, we can plug these values into the formula:Enthalpy of vaporization = 40 kJ / 20 gEnthalpy of vaporization = 2 kJ/gSo, the enthalpy of vaporization of water at 100C is 2 kJ/g.