Polystyrene has been shown to be soluble in certain terpinene solvents. From the evidence below, determine...

Polystyrene has been shown to be soluble in certain terpinene solvents. From the evidence below, determine the enthaply of vaporization of the terpinene. (a) Dissolving 2.86 mL of benzene in 50.0 g of the terpinene raises the boiling point from 174.8◦C to 177.53◦C. (b) Dissolving 2.14 g of the terpinene in 30 mL of benzene increases the boiling point of benzene to 355.8K. (c) Benzene has a ∆vapH = 32.3 kJ·mol−1, a density of 0.877 g·mL−1, and a normal boiling point of 353.3K. When 13.36 grams of the polystyrene are added to 1 L of the terpinene at 200◦C, the osmotic pressure is 3.96 × 10−3 atm. Determine the molar mass of the polystyrene. Approximately how many styrene molecules are in a strand?

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queen_honey_blossom answered 1 year ago

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