3. a. A solution contains 1.75 g of a non-volatile, non-clectrolyte solute dissolved in 23.47g stearic acid. The freezing point of the solution is 67.2°C. The freezing point of pure stearic acid is 69.3°C and its freezing point constant, Kp, is 4.5°C kg/mol. What is the molar mass of the solute? b. When a liquid is in a narrow tube, the surface of the liquid, the meniscus, may be either concave, A, or convex, B What does the shape of the meniscus tell you about the intermolecular forces of attraction between the liquid and the tube?

3. a. A solution contains 1.75 g of a non-volatile, non-clectrolyte solute dissolved in 23.47g stearic acid. The freezing point of the solution is 67.2°C. The freezing point of pure stearic acid is 69.3°C and its freezing point constant, Kp, is 4.5°C kg/mol. What is the molar mass of the solute? b. When a liquid is in a narrow tube, the surface of the liquid, the meniscus, may be either concave, A, or convex, B What does the shape of the meniscus tell you about the intermolecular forces of attraction between the liquid and the tube?

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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178. Subject :- Chemistry
5. Chemical Xis a solid with white color that forms large crystals. The solubility of chemical X in water at different temperatures is shown below. Solubility of X in H20 124 10- 8- 6- 2- 0+ Ó 10 20 30 40 50 60 70 80 90100 Temperature (°C) Irina wants to dissolve 30 grams of Xin 1 liter of water. She does so by stirring 30 grams of the large crystals into 1 liter of water at 45°C. How could Irina change her method to dissolve all the X faster? Solubility (g/100 g H,O) 4-
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16. Determine the cahnge in boiling point for 397.7 g of carbon disulfide (Kb= 2.34 degrees Celsius kg/mol) if 35.0 g of a nonvolatile, nonionizing compound is dissolved in it. The molar mass of the compound is 70.0 g/mol and the boiling point of the pure carbon disulfide is 46.2 degrees Celsius. a. 2.34 degrees Celsius b. 5.88 degrees Celsius c. 24.8 degrees Celsius d. 2.94 degrees Celsius
Match the term with the related statement, A mixture with particles that settle out if undisturbed. The visible erratic motion of colloid particles, under a microscope. A measure of how much solute is dissolved in a specific amount of solvent or solution. The overall energy change that occurs when a solution forms A heterogeneous mixture of intermediate size particles. The process of surrounding solute particles with solvent particles. A homogeneous mixture with particles less than 1 nm in diameter whose solute cannot be filtered out or settled out of solution. The scattering of light by dispersed colloid particles. : colloid : Tyndall effect : suspension : solvation : heat of solution : concentration : solution : Brownian motion Review DELL %24 4 7 * 00 口 #3
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