Accessibility Mode Print P Find EF Immersive Reader 4. Dichloromethane, CH2C12 (D) and ethanol, C2H60 (E) are miscible liquids. At 25.0°C, the vapor pressure of pure D is 353. torr, and that of pure E is 56.1 torr. A solution is prepared that contains 23.3 grams of D and 79.4 grams of E. (a) What is the vapor pressure of D (PD) above this solution? (b) What is the vapor pressure of E (PE) above this solution? PD= torr PE= torr (c) Please explain the interesting numerical result you got. Why did this happen? (d) Which of these liquids would have the higher boiling point? How do you know? (e) How could you separate these liquids? Name the process and describe it in your own words. 100% Enviar Feedback à Mi

Accessibility Mode Print P Find EF Immersive Reader 4. Dichloromethane, CH2C12 (D) and ethanol, C2H60 (E) are miscible liquids. At 25.0°C, the vapor pressure of pure D is 353. torr, and that of pure E is 56.1 torr. A solution is prepared that contains 23.3 grams of D and 79.4 grams of E. (a) What is the vapor pressure of D (PD) above this solution? (b) What is the vapor pressure of E (PE) above this solution? PD= torr PE= torr (c) Please explain the interesting numerical result you got. Why did this happen? (d) Which of these liquids would have the higher boiling point? How do you know? (e) How could you separate these liquids? Name the process and describe it in your own words. 100% Enviar Feedback à Mi

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Use the References to access important values if needed for this question. What is the solubility of methylacetylene (in units of grams per liter) in water at 25 °C, when the C3H4 gas over the solution has a partial pressure of 0.524 atm? kH for C3H4 at 25 °C is 9.23×10² mol/L-atm.
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 19.9 g of biphenyl in 25.8 g of benzene? (anwser needs to be in torr)
A solution is prepared by adding 101 g of lactose (milk sugar) to 102 g of water at 55 °C. The partial pressure of water above the solution is __________ torr. The vapor pressure of pure water at 55 °C is 118 torr. The MW of lactose is 342.3 g/mol.
Question 7 (1 point) Which of the following would decrease the rate of solvation for solid NaCl in water? A stir bar is added to agitate (mix) the solution. The pressure is increased from 1 atm to 2 atm. The temperature decreases from 50OC to 200C O The NaCl is crushed into small pieces using a mortar and pestle.
Pentane (C5H12) and hexane (C6H14) form an ideal solution. At 25°C the vapor pressures of pentane and hexane are 511 and 150 torr, respectively. A solution is prepared by mixing 25 mL pentane (density, 0.63 g/mL) with 43 mL hexane (density, 0.66 g/mL). What is the vapor pressure of the resulting solution? Ptotal= torr What is the composition by the mole fraction of pentane in the vapor that is in equilibrium with this solution?
(d) Determine the freezing point and boiling point of the solution. (Assume density of water = 1.00 g/mL; Kf= 1.86oC/m; Kb= 0.512oC/m; density of EG = 1.114 g/mL
pentane is an organic liquid with a density of 0.626g•mL^-1 that is commonly used as a solvent. What volume of a 0.940 ppm stock solution of an organic solute in pentane is necessary to prepare 200.0 mL of a 0.0520 ppm solution by diltutuon with pentane?
You prepare a solution by mixing 16.9 mL of acetone (d = 0.7844 g/mL, 58.08 g/mol) with 34.4 mL of tolune (d = 0.8670 g/mL, 92.14 g/mol). What is the mole fraction of acetone in the solution? Report your answer to the thousandths place.
a) b) as per guidelines you can answer these two question because they are bits of the same question
Pentane (C5H12) and hexane (C6H14) form ideal solution. At 25oC the vapor pressure of pentane and hexane are 511 torr and 150. torr, respectively. A solution is prepared by mixing 30.0mL pentane (density = 0.63g/mL) with 45.0mL hexane (density = 0.66 g/mL). (a) What are the mole fractions of pentane and hexane, respectively,in the solution? (b) What isthe total vapor pressure of the solution at 25oC? (c) What are the mole percent of pentane and hexane, respectively, in the vapor phase at 25oC? (Molar mass of pentane and hexane are: 72.15 g/mol and 86.17 g/mol, respectively.)
When 98.9 g of glycine (C₂H5NO₂) are dissolved in 900. g of a certain mystery liquid X, the freezing point of the solution is 4.7 °C lower than the freezing point of pure X. On the other hand, when 98.9 g of iron(III) nitrate = (Fe(NO3)3): are dissolved in the same mass of X, the freezing point of the solution is 5.4 °C lower than the freezing point of pure X. Calculate the van't Hoff factor for iron(III) nitrate in X. Be sure your answer has a unit symbol, if necessary, and round your answer to 2 significant digits. i= 0
The colligative molality of an unknown aqueous solution is 1.01 m. (For pure water at 20°C: Po = 17.5 torr, kf = 1.86°C/m, kb = 0.512°C/m.) (a) What is the vapor pressure of the solution at 20°C? (Assume the solute is non-volatile and the solution is ideal.) torr(b) What is the boiling point of the solution? °C(c) What is the freezing point of the solution? °C