Problem 1 The dissolution of 5.35g of a substance (a non-electrolyte) in 45 g of benzene rises the boiling point of the

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Problem 1 The Dissolution Of 5 35g Of A Substance A Non Electrolyte In 45 G Of Benzene Rises The Boiling Point Of The 1 (46.97 KiB) Viewed 114 times

Problem 1 The dissolution of 5.35g of a substance (a non-electrolyte) in 45 g of benzene rises the boiling point of the solvent by 0.925°C. Notice that K(benzene) = 5.12K kg mol-¹ and K, (benzene) = 2.53 K kg mol-¹. The density of liquid benzene is 0.8766 g cm-3 (and is approximately independent of temperature). The vapor pressure of pure liquid benzene at 298.15 K is 103 Torr, and the molar mass of benzene is 78.11 g mol-¹. Assuming that the solution is an ideal dilute solution, calculate (a) the molar mass M₂ of the solute. (b) the freezing point lowering (AT) for the solution. (c) the relative decrease of the vapor pressure of the solvent (subscript 1) (pi-P₁)/Pi in the solution at 298.15 K. (d) the osmotic pressure of the solution at 298.15 K.