2. A one-liter solution contains Poly (phenylene oxide) (PPO) with a length of 10,000 monomers. In the following calculations, we will use the Flory model and assume that the volume of a lattice unit is the volume of a solvent molecule. a. Use the table of solubility constants and calculate x for Poly(phenylene oxide) in a solution of Benzene (molar mass 78.11 g/mol, and density of 0.8765 g/cm³) and DMF (molar mass 73.09 g/mol, density of 0.948 g/cm³). b. At room temperature kB T = 9.834 × 10^(-22) cal Use the result you got in the previous section and draw a graph of AFmix/kg T as a function of oppo for the two solutions (in software - Excel, Origin, Matlab, etc.). At which o is the minimum obtained? c. Extract from the graph you received the miscibility gap range for both systems. Will the systems be stable for o=0.4? If not - what phases will they break into and what will be the final AFmix/kg T?

2. A one-liter solution contains Poly (phenylene oxide) (PPO) with a length of 10,000 monomers. In the following calculations, we will use the Flory model and assume that the volume of a lattice unit is the volume of a solvent molecule. a. Use the table of solubility constants and calculate x for Poly(phenylene oxide) in a solution of Benzene (molar mass 78.11 g/mol, and density of 0.8765 g/cm³) and DMF (molar mass 73.09 g/mol, density of 0.948 g/cm³). b. At room temperature kB T = 9.834 × 10^(-22) cal Use the result you got in the previous section and draw a graph of AFmix/kg T as a function of oppo for the two solutions (in software - Excel, Origin, Matlab, etc.). At which o is the minimum obtained? c. Extract from the graph you received the miscibility gap range for both systems. Will the systems be stable for o=0.4? If not - what phases will they break into and what will be the final AFmix/kg T?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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