Calculate the standard entropy of vaporization of ethanol, C2H5OH, at 285.0 K, given that the molar heat capacity at constant pressure of ethanol vapor is 78.3 J

The standard entropy of vaporization of ethanol is 0.275 J/K

Explanation:

Using Gibbs Helmholtz equation:

For a phase change, the reaction remains in equilibrium, thus

Given: Temperature = 285.0 K

Putting the values in the equation:

Thus  the standard entropy of vaporization of ethanol is 0.275 J/K

a:

by the combination of an unlimited number of elements