3. The partial molar volumes of propanone (acetone) and trichloromethane (chloroform) in amixture in which the mole fraction of CHC13 is 0.4693 are 74.166 cm³ mol-i and 80.235 cm3mol-1, respectively. What is the volume of a solution of mass 1.000 kg?4. Discuss the basic thermodynamic concept behind freezing point depression.5. Based from activity 2, summarize and discuss the experimental method by which the freezingpoint of pure acetic acid was determined.00

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Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter12: Solutions

Section: Chapter Questions

Problem 12.72QE

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Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25C. The vapor above the solution is collected and condensed. Using the following data, determine the composition in mole fraction of the condensed vapor. Substance Gfo C6H6(l) 124.50 kJ/mol C6H6(g) 129.66 kJ/mol CCI4(l) 65.21 kJ/mol CCI4,(g) 60.59 kJ/mol
Predict the partial vapour pressure of HCl above its solution in liquid germanium tetrachloride of molality 0.10 mol kg−1. For data, see Exercise E5A.8(a).
The enthalpy of fusion of anthracene is 28.8 kJ mol−1 and its melting point is 217°C. Calculate its ideal solubility in benzene at 26°C.
The osmolarity of physiological saline solution is 0.300 osmol/L. Assuming a membrane that is permeable only to water, what % (w/v) chromium(II) nitrate, Cr(NO3)2, solution is isotonic to physiological saline?
What mass of a non-electrolyte solute is required, when mixed with 225 g H2O, to change the equilibrium vapor pressure of H2O from 1.013 x 105 Pa to 8.104 x104 Pa, at approximately 110 °C? The molar mass of the non-electrolyte solute is 62.07 g mol−1. Assume ideal behaviour for the solution.
The boiling point at 1.236 atm pressure of a solution of 0.6589 mole fraction of benzene and 0.3411 mole fraction toluene is 88°C. At this temperature the the vapour pressures of pure benzene and toluene are 1.276 and 0.5059 atm, respectively. What is the vapour composition that boils off this liquid?
Determine the vapor pressure of benzyl alcohol at 462.3 K in Pa.
The osmotic pressure of an aqueous solution of a non-ionic solute is 120 kPa at 300 K. Assuming that the molarity and molality of the solution are essentially equal for dilute solutions, calculate the temps at which this solution freezes and boils. (Kf(H2O)= 1.86 °/m, and Kb(H2O)= 0.512 °/m)

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3. The partial molar volumes of propanone (acetone) and trichloromethane (chloroform) in a mixture in which the mole fraction of CHCI3 is 0.4693 are 74.166 cm3 mol-1 and 80.235 cm3 mol-1, respectively. What is the volume of a solution of mass 1.000 kg?