HI Has a Normal Boiling Point of -35 $\Delta$ H_vap Is 21

Multiple Choice

HI has a normal boiling point of -35.4°C, and its $\Delta$ H_vap is 21.16 kJ/mol.Calculate the molar entropy of vaporization ( $\Delta$ S_vap) .

A) 598 J/K·mol
B) 68.6 J/K·mol
C) 75.2 J/K·mol
D) 0.068 J/K·mol
E) 89.0 J/K·mol