Using the entropy change equation of the lattice model, calculate the change in entropy for the...

 

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Using the entropy change equation of the lattice model, calculate the change in entropy for the following mixtures. (a) 300 g of toluene and 200 g of methyl ethyl ketone (MEK) (7 points); (b) 300 g of toluene and 150 g of polystyrene with a molecular weight of 1.9 x 105 g/mol (density = 1.083 g/cm³) (9 points); and (c) 100 g of polystyrene (MW = 1.5 x 105, density = 1.103 g/cm³) and 120 g of poly(methyl methacrylate, C5H8O₂) (MW = 1.4 x 104, density = 1.027 g/cm³) (12 points). Note: you will use AS mix=-R(n, Inx,+n₂Inx₂) to calculate the entropy change for (a), but use equation =-R[n₂Ing+ning,] to calculate the entropy changes for (b) and (c). (28 points in AS of total) mix Using the entropy change equation of the lattice model, calculate the change in entropy for the following mixtures. (a) 300 g of toluene and 200 g of methyl ethyl ketone (MEK) (7 points); (b) 300 g of toluene and 150 g of polystyrene with a molecular weight of 1.9 x 105 g/mol (density = 1.083 g/cm³) (9 points); and (c) 100 g of polystyrene (MW = 1.5 x 105, density = 1.103 g/cm³) and 120 g of poly(methyl methacrylate, C5H8O₂) (MW = 1.4 x 104, density = 1.027 g/cm³) (12 points). Note: you will use AS mix=-R(n, Inx,+n₂Inx₂) to calculate the entropy change for (a), but use equation =-R[n₂Ing+ning,] to calculate the entropy changes for (b) and (c). (28 points in AS of total) mix

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300g of toluene and 200g of methyl ethyl ketone RM... View the full answer