Question

When 2.34 g of a nonelectrolyte solute is dissolved in water to make 405 mL of solution at 27 °C, the solution exerts an osmotic pressure of 905 torr. What is the molar concentration of the solution? concentration: How many moles of solute are in the solution? moles of solute: mol What is the molar mass of the solute? molar mass: g/mol

Answer 1

se osmotic luiesswe - gostart = 1:1946 wtm I tarr = 0.00132 atm, Mass of non electrolyte Solute = 2.349 Temperature of solution = 27°C = 3ook. n osmetic Pressure Concentration 2 - Aas Canston = 0.08205 Lahad 'k = CRT K # - SC Molar Concentration 1.1946 atm = C+0.08205 Latm mot k' C= 1.1946 mell - 10.048531 mollL 0.0820543ook Moles of Solute - Asume know (= 0.0485 melll IL Centon = 0.0485 mol of Solute al solution Contains = 0.0485mol +40 5ml=10.0196 moles/ 1ooome No. of Moles=linen Mass molar mass 0.0196 mol = Cinen mass = 2.349 Molarmoss M M= 2.349 - (119.38g| mel/ 010196mel L