We’re being asked to determine the heat (q) of the evaporation of 451 g of water at 373 K.
Recall that heat will be absorbed when water is being evaporated (phase change). Calculate heat (q) using the equation:
q = heat, J
n = number of moles (mol)
ΔHvap = heat of vaporization, kJ/mol
The heat of vaporization of water at 373 K is 40.7 kJ/mol.
Find q for the evaporation of 451 g of water at this temperature.