Chapter 19, Problem 25E

The normal boiling point of $B{r}_2(l)$ is 58.8 °C, and its molar enthalpy of vaporization is $\Delta H_{vap}=29.6kL/mol$ . (a) When $B{r}_2(l)$ boils at its normal boiling point, does its entropy increase or decrease? (b) Calculate the value of $\Delta S$ when 1.00 mol of $B{r}_2(l)$ is vaporized at 58.8 °C.