2. A on is made by mixing 1.08 g of an unknown non-volatile non-electrolyte with g of benzene. The free 10.00 zing point of pure benzene is 5.5°C. The molal reezin ng point depression constant, K for benzene is 5.12°C/molal. The following data were obtained in a freezing point depression experiment Time, min Temperature C TemperatureC 0.5 0.1 0.8 0.9 0.8 0.7 0.6 0.5 0.4 0.2 -0.5 1.2 Time min 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 23.8 22.1 20.2 18.5 16.6 14.8 12.7 10.8 9.1 7.2 5.5 3.6 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 Plot a graph of time/temperature, using the y-axis for temperature and the x-axis for time. Determine the freezing point of the solution. A. 2 De-tereine tHe alality of the solthon

2. A on is made by mixing 1.08 g of an unknown non-volatile non-electrolyte with g of benzene. The free 10.00 zing point of pure benzene is 5.5°C. The molal reezin ng point depression constant, K for benzene is 5.12°C/molal. The following data were obtained in a freezing point depression experiment Time, min Temperature C TemperatureC 0.5 0.1 0.8 0.9 0.8 0.7 0.6 0.5 0.4 0.2 -0.5 1.2 Time min 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 23.8 22.1 20.2 18.5 16.6 14.8 12.7 10.8 9.1 7.2 5.5 3.6 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 Plot a graph of time/temperature, using the y-axis for temperature and the x-axis for time. Determine the freezing point of the solution. A. 2 De-tereine tHe alality of the solthon

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...

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www-awu.aleks.com/alekscgi/x/lsl.exe/10_u-IgNslkr7j8P3jH-lvTqeviKFP6W0cqJcWJdIACROQwyw24GWHinwgLxrTA3qJGX 18.5 Gibbs Free E... Reading Schedule 4 Solubility and... esc 18.3 Gibbs Free E... 5.3 Enthalpies of.... O KINETICS AND EQUILIBRIUM Calculating equilibrium composition from an equilibrium constant Zoom (2).pkg Suppose a 250. mL flask is filled with 1.2 mol of Cl₂ and 0.60 mol of HCl. The following reaction becomes possible: H₂(g) + Cl₂(g). 2HCl(g) The equilibrium constant K for this reaction is 0.409 at the temperature of the flask. Calculate the equilibrium molarity of H₂. Round your answer to two decimal places. M Explcnation Check 3 X $ 4 S > C % 5 (Q) tv I A 6 We 19.6 Reduction Po... Ya sc & C Ⓒ2022 McGraw Hill LLC. All Rights You 9
ANALYSIS: A phenomenon called supercooling is frequently encountered in the experiment of molar mass determination by freezing point depression. What event is likely to give rise to supercooling?
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Average activity coefficient for HBr is 0.930 for three different diluted solutions at 250C. (at m 5.0 mmol kg-1), 0.907 (at m 10.0 mmol kg-1 ), and 0.879 (m 20.0 It is given in mmol / kg -1). Calculate the approximate value of the constant B in the expanded Debye Hückel law. %3D
Boiling Point Elevation/Freezing Point Depression AT = m K where, for freezing point depression: AT = T(pure solvent) - T(solution) and for boiling point elevation: AT = T(solution) - T(pure solvent) m = (# moles solute / Kg solvent) Kb = boiling point elevation constant. Kf = freezing point depression constant. Kb and Kf depend only on the SOLVENT. Below are some common values. Use these values for the calculations that follow. Formula H₂O Solvent Water Ethanol Chloroform CHCI3 Benzene C6H6 Diethyl ether CH3CH₂CH₂CH3 CH3CH₂OH Kb(°C / m) Kf(°C / m). 0.512 1.86 1.22 1.99 3.67 2.53 2.02 5.12
Consider a binary solution for which the vapor pressure (in torr) of one of the components (say component 1) is given empirically by Calculate the activity and the activity coefficient of component 1 when x1 = 0.25 based on (a) a solvent standard state; (b) a solute standard state.
Match the following: Freezing point depressionThe effect of supercoolingFreezing point of pure solventRegion where liquid is coolingRegion where liquid is freezing I have attached a picture for this question. I guessed the answers to be B,D,E,F,A but i am not sure if it is correct
How do find the experimental molar mass of solute from the given table
= The vapor pressure of component A'is 300.3 torr, and that of component B is 70 torr at 35 °C. A Solution of A and B at 35 °C with x = 0.300 has a vapor pressure of 70.3 torr and a vapor composition of x = 0.275. (i) Calculate yand a, for component A and for component B in this solution. %3D -tin. (ii) Calculate u - Hi for each component of this solution. (iii) Calculate AG for the mixing of 0.200 mole of liquid component B and 0.800 mole of liquid chloroform at 35 "c. (iv) Calculate AGmix for the corresponding ideal solution.
2. The activity coefficients for a benzene - n-heptane binary mixture are shown below as a function of the mole fraction of benzene. The excess energy for the system is given by g = Xıln(yı) + x2 In(y2) = X1X2 (Ax2 + Bx1). Calculate the values of A and B. 0.04 0.20 04 0.38 0.58 24 0.08 0.27 0.48 0.69 0.78 42 0.89 61 1.27 64 92 42 57 04 72 1.29 1.23 1.19 1.15 1.11 1.05 1.00 1.08 38 1.03 68 98 58 88 98 96 38 11 78 1 y 0.99 1.06 76 0.99 1.00 1.01 59 1.03 59 1.10 1.16 1.24 1.40 2 85 98 68 96 64 01 38
Assuming 100% dissociation, calculate the freezing point (T) and boiling point (T) of 2.05 m Na₂SO4 (aq). Colligative constants can be found in the chempendix. f Tf= Tь = psy HW 3.pdf APA Title Page....doc D PSY Final Project....pdf 'C