A solution of bromine (Br2) in dichloromethane (CH2Cl2) is prepared in the Lab to mix into a

reaction. The mixture contains 0.043 moles of bromine and 0.094 moles of dichloromethane.

Normal Boiling Point (K) Enthalpy of Vaporization (kJ/mol)

Bromine 332.0 29.96

Dichloromethane 312.8 28.06

A. What is the mole fraction of each component of this solution?

B. During the experiment, the lab was found to have a temperature of 296 K. What is the vapor pressure of each of the components at this temperature, before they are mixed together?

C. What is the vapor pressure of the solution as prepared at 296 K? D. Which of these two compounds is more volatile? How do you know?

E. Explain from a molecular standpoint where the difference in these volatilities comes from