Question

The enthalpy of vaporization of water at hundred degree celsius is 40. 63 its entropy of vaporization would be

Answer 1

H2O (liquid)-------->H2O(gas)

∆n =1

∆E=∆H --n×R×T

=40630 -- 1×2×373

=40630 --3101.1

=37528.9J/mol

=37.528kJ/mol

hope this will help you