2. The Rast camphor method is a cryoscopic technique for molar mass determination. Exactly 1.00g of an isoprenoid of known formula (C5H8)n was dissolved in 5.00 g of camphor. The freezing pointof the resulting solution decreased by 18.4 °C relative to pure camphor. Knowing that the K₁ ofcamphor is 37.7 deg.kg/mol:A. Calculate for the molar mass of the isoprenoid.B. Calculate the value of n in the given formula of the isoprenoid. Report in whole number.C. The normal freezing point of camphor is 178.4 °C. At what temperature did theisoprenoid-camphor solution freeze?

This can be done by the colligative properties of solution. Fout of four , freezing point technique…

2. The Rast camphor method is a cryoscopic technique for molar mass determination. Exactly 1.00 g of an isoprenoid of known formula (C5Hg)n was dissolved in 5.00 g of camphor. The freezing point of the resulting solution decreased by 18.4 °C relative to pure camphor. Knowing that the Kf of camphor is 37.7 deg.kg/mol: A. Calculate for the molar mass of the isoprenoid. B. Calculate the value of n in the given formula of the isoprenoid. Report in whole number. C. The normal freezing point of camphor is 178.4 °C. At what temperature did the isoprenoid-camphor solution freeze?

2. The Rast camphor method is a cryoscopic technique for molar mass determination. Exactly 1.00 g of an isoprenoid of known formula (C5Hg)n was dissolved in 5.00 g of camphor. The freezing point of the resulting solution decreased by 18.4 °C relative to pure camphor. Knowing that the Kf of camphor is 37.7 deg.kg/mol: A. Calculate for the molar mass of the isoprenoid. B. Calculate the value of n in the given formula of the isoprenoid. Report in whole number. C. The normal freezing point of camphor is 178.4 °C. At what temperature did the isoprenoid-camphor solution freeze?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter11: Properties Of Solutions

Section: Chapter Questions

Problem 129CP: You make 20.0 g of a sucrose (C12H22O11) and NaCl mixture and dissolve it in 1.00 kg water. The...

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The vapor pressures of several solutions of water-propanol (CH3CH2CH2OH) were determined at various compositions, with the following data collected at 45C: H2O Vapor pressure(torr) 0 74.0 0.15 77.3 0.37 80.2 0.54 81.6 0.69 80.6 0.83 78.2 1.00 71.9 a. Are solutions of water and propanol ideal? Explain. b. Predict the sign of Hsoln for water-propanol solutions. c. Are the interactive forces between propanol and water molecules weaker than, stronger than, or equal to the interactive forces between the pure substances? Explain. d. Which of the solutions in the data would have the lowest normal boiling point?
You make 20.0 g of a sucrose (C12H22O11) and NaCl mixture and dissolve it in 1.00 kg water. The freezing point of this solution is found to be 0.426C. Assuming ideal behavior, calculate the mass percent composition of the original mixture, and the mole fraction of sucrose in the original mixture.
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