The Normal Boiling Point of C₂Cl₃F₃ Is 47

Multiple Choice

The normal boiling point of C₂Cl₃F₃ is 47.6 °C and its molar enthalpy of vaporization is 27.49 kJ/mol.What is the change in entropy in the system in J/K when 28.6 grams of C₂Cl₃F₃ vaporizes to a gas at the normal boiling point?

A) -13.1
B) -4.19
C) 4.19
D) 13.1
E) 27.5