Chapter 18, Problem 109E

Given the tabulated data, calculate $\Delta S_{\text{vap}}$ for each of the first four liquids. ( $\Delta S_{\text{vap}}=\Delta H_{\text{vap}}/T$ , where T is in K)

Compound	Name	Bp( ?C)	$\Delta H_{\text{vap}}$ (kJ/mol) at bp
C6H10O	Diethyl ether	34.6	26.5
C3H6	Acetone	56.1	29.1
C6H6	Benzene	79.8	30.8
CHCl3	Chloroform	60.8	29.4
C2H5OH	Ethanol	77.8	38.6
H2O	Water	100.0	40.7

All four values should be close to each other. Predict whether the last two liquids in the table have $\Delta S_{\text{vap}}$ in this same range. If not, predict whether it is larger or smaller and explain. Verify your prediction.