As the lead polymer engineer at Eastman Chemicals Inc, you are charged with finding a good solvent that will dissolve polystyrene. You have determined experimentally that the solubility parameter for polystyrene is 18.5 MPa 2. You have the following solvent options: Table 1: Solvent Solubility Parameters 8 MPa 1/2 Solvent Acetone Chloroform Cyclohexane 22.2 21.4 15.2 4.1 Which solvent do you think will dissolve polystyrene and why? 4.2 Your technician tries dissolving the polymer in the solvent you chose but found that polystyrene is not soluble. What happened? 4.3 Using the near-universal constant, calculate a better estimate of the maximum solubility mismatch allowed to ensure polymer solubility across all compositions