General Chemistry II Laboratory Manual, 2019 Revsion Determination of Molar Mass by Freezing Point Depression 37 Laboratory Report Name:Mivanda Singh Partner's Name:Menauallan, Sabia Date: 2||| \20 Instructor's Initials: Name of Solute ethyl paraben 12.2859 5-639 18.587g 3.701g 1근구496 243- 0.1959 23.3€ Weight of Test Tube and t-Butanol Weight of Empty Test Tube Weight of t-Butanol Freezing Point of t-Butanol Weight of Solute Used for Run #2 20.3°C Freezing Point of Solution ATr of the solution Molality of t-Butanol solution Experimental Molar Mass of Solute* Percent Error* Show calculations for the first part below. Welght of t Butanol :12.288 g-8.5819-3.101 g

General Chemistry II Laboratory Manual, 2019 Revsion Determination of Molar Mass by Freezing Point Depression 37 Laboratory Report Name:Mivanda Singh Partner's Name:Menauallan, Sabia Date: 2||| \20 Instructor's Initials: Name of Solute ethyl paraben 12.2859 5-639 18.587g 3.701g 1근구496 243- 0.1959 23.3€ Weight of Test Tube and t-Butanol Weight of Empty Test Tube Weight of t-Butanol Freezing Point of t-Butanol Weight of Solute Used for Run #2 20.3°C Freezing Point of Solution ATr of the solution Molality of t-Butanol solution Experimental Molar Mass of Solute* Percent Error* Show calculations for the first part below. Welght of t Butanol :12.288 g-8.5819-3.101 g

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter10: Properties Of Solutions

Section: Chapter Questions

Problem 7RQ

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Once again, consider Fig. 10-9. Suppose instead of having a nonvolatile solute in the solvent in one beaker, the two beakers contain different volatile liquids. That is, suppose one beaker contains liquid A (Pvap = 50 torr) and the other beaker contains liquid B (Pvap = 100 torr). Explain what happens as time passes. How is this similar to the first case (shown in the figure)? How is it different?
A gaseous solute dissolves in water. The solution process has H=15 kJ. Its solubility at 22C and 6.00 atm is 0.0300 M. Would you expect the solubility to be greater or less at (a) 22C and 1 atm? (a) 18C and 6 atm? (a) 15C and 10 atm? (a) 35C and 3 atm?
In terms of Raoults law, distinguish between an ideal liquid-liquid solution and a nonideal liquid-liquid solution. lf a solution is ideal, what is true about Hsoln, T for the solution formation, and the interactive forces within the pure solute and pure solvent as compared to the interactive forces within the solution? Give an example of an ideal solution. Answer the previous two questions for solutions that exhibit either negative or positive deviations from Raoults law.
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.
An aqueous solution containing 0.250 mole of Q, a strong electrolyte, in 5.00 102 g water freezes at 2.79C. What is the vant Hoff factor for Q? The molal freezing-point depression constant for water is 1.86C kg/mol. What is the formula of Q if it is 38.68% chlorine by mass and there are twice as many anions as cations in one formula unit of Q?