Chemistry: Structure and Properties (2nd Edition)
2nd Edition
ISBN: 9780134293936
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 13, Problem 133E
Interpretation Introduction
To determine: The most effective way to lower the freezing point of water.
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Chemistry: Structure and Properties (2nd Edition)
Ch. 13 - What is a solution? What are the solute and...Ch. 13 - What does it mean when we say that a substance is...Ch. 13 - Why do two ideal gases thoroughly mix when...Ch. 13 - Prob. 4ECh. 13 - Prob. 5ECh. 13 - Explain how the relative strengths of...Ch. 13 - What does the statement like dissolves like mean...Ch. 13 - Prob. 8ECh. 13 - What is the heat of hydration(Hhydration)? How...Ch. 13 - Prob. 10E
Ch. 13 - How does temperature affect the solubility of a...Ch. 13 - Prob. 12ECh. 13 - How does pressure affect the solubility of a gas...Ch. 13 - What is Henry’s law? For what kinds of...Ch. 13 - Prob. 15ECh. 13 - How are parts by mass and parts by volume used in...Ch. 13 - Prob. 17ECh. 13 - What is Raoult’s law? For what kind of...Ch. 13 - Explain the difference between an ideal and a...Ch. 13 - Prob. 20ECh. 13 - Prob. 21ECh. 13 - What are colligative properties?Ch. 13 - Prob. 23ECh. 13 - Explain the significance of the van’t Hoff factor...Ch. 13 - Prob. 25ECh. 13 - Pick an appropriate solvent from Table 13.3 to...Ch. 13 - Which molecule would you expect to be more soluble...Ch. 13 - Prob. 28ECh. 13 - Prob. 29ECh. 13 - Prob. 30ECh. 13 - When ammonium chloride (NH4Cl) is dissolved in...Ch. 13 - Prob. 32ECh. 13 - Prob. 33ECh. 13 - Use the given data to calculate the heats of...Ch. 13 - Lithium iodide has a lattice energy of...Ch. 13 - Prob. 36ECh. 13 - A solution contains 25 g of NaCl per 100.0 g of...Ch. 13 - A solution contains 32 g of KNO3 per 100.0 g of...Ch. 13 - Prob. 39ECh. 13 - A KCI solution containing 42 g of KCI per 100.0 g...Ch. 13 - Some laboratory procedures involving...Ch. 13 - A person preparing a fish tank fills the tank with...Ch. 13 - Prob. 43ECh. 13 - Scuba divers breathing air at increased pressure...Ch. 13 - Calculate the mass of nitrogen dissolved at room...Ch. 13 - Use Henry’s law to determine the molar solubility...Ch. 13 - An aqueous NaCl solution is made using 112 g of...Ch. 13 - Prob. 48ECh. 13 - To what volume should you dilute 50.0 mL of a...Ch. 13 - Prob. 50ECh. 13 - Silver nitrate solutions are used to plate silver...Ch. 13 - Prob. 52ECh. 13 - Prob. 53ECh. 13 - Prob. 54ECh. 13 - You can purchase nitric acid in a concentrated...Ch. 13 - You can purchase hydrochloric acid in a...Ch. 13 - Prob. 57ECh. 13 - Prob. 58ECh. 13 - Prob. 59ECh. 13 - Prob. 60ECh. 13 - Prob. 61ECh. 13 - Prob. 62ECh. 13 - Prob. 63ECh. 13 - Prob. 64ECh. 13 - A beaker contains 100.0 mL of pure water. A second...Ch. 13 - Which solution has the highest vapor pressure? a....Ch. 13 - Calculate the vapor pressure of a solution...Ch. 13 - A solution contains naphthalene (C10H8) dissolved...Ch. 13 - A solution contains 50.0 g of heptane (C7H16) and...Ch. 13 - A solution contains a mixture of pentane and...Ch. 13 - A solution contains 4.08 g of chloroform (C3H8O3)...Ch. 13 - A solution of methanol and water has a mole...Ch. 13 - Prob. 73ECh. 13 - An ethylene glycol solution contains 21.2 g of...Ch. 13 - Calculate the freezing point and melting point of...Ch. 13 - Calculate the freezing point and melting point of...Ch. 13 - An aqueous solution containing 17.5 g of an...Ch. 13 - An aqueous solution containing 35.9 g of an...Ch. 13 - Calculate the osmotic pressure of a solution...Ch. 13 - Prob. 80ECh. 13 - A solution containing 27.55 mg of an unknown...Ch. 13 - Prob. 82ECh. 13 - Calculate the freezing point and boiling point...Ch. 13 - Calculate the freezing point and boiling point in...Ch. 13 - What mass of salt (NaCl) should you add to 1.00 L...Ch. 13 - Prob. 86ECh. 13 - Use the van’t Hoff factors in Table 13.7 to...Ch. 13 - Prob. 88ECh. 13 - A 1.2-m aqueous solution of an ionic compound with...Ch. 13 - A 0.95-m aqueous solution of an ionic compound...Ch. 13 - Prob. 91ECh. 13 - Prob. 92ECh. 13 - Prob. 93ECh. 13 - An aqueous CaCl2 solution has a vapor pressure of...Ch. 13 - Prob. 95ECh. 13 - Prob. 96ECh. 13 - Potassium perchlorate (KClO4) has a lattice energy...Ch. 13 - Sodium hydroxide (NaOH) has a lattice energy of...Ch. 13 - Prob. 99ECh. 13 - Prob. 100ECh. 13 - Prob. 101ECh. 13 - Water softeners often replace calcium ions in hard...Ch. 13 - Prob. 103ECh. 13 - Prob. 104ECh. 13 - Prob. 105ECh. 13 - Prob. 106ECh. 13 - An isotonic solution contains 0.90% NaCl mass to...Ch. 13 - Prob. 108ECh. 13 - Prob. 109ECh. 13 - When HNO2 dissolves in water, it partially...Ch. 13 - Prob. 111ECh. 13 - Prob. 112ECh. 13 - Prob. 113ECh. 13 - Distillation is a method of purification based on...Ch. 13 - Prob. 115ECh. 13 - Find the mass of urea (CH4N2O) needed to prepare...Ch. 13 - A solution contains 10.05 g of unknown compound...Ch. 13 - Prob. 118ECh. 13 - Prob. 119ECh. 13 - Prob. 120ECh. 13 - The small bubbles that form on the bottom of a...Ch. 13 - The vapor above a mixture of pentane and hexane at...Ch. 13 - A 1.10-g sample contains only glucose (C6H12O6)...Ch. 13 - Prob. 124ECh. 13 - Two alcohols, isopropyl alcohol and propyl...Ch. 13 - A metal, M, of atomic mass 96 amu reacts with...Ch. 13 - Prob. 127ECh. 13 - Prob. 128ECh. 13 - A solution is prepared by dissolving 11.60 g of a...Ch. 13 - Substance A is a nonpolar liquid and has only...Ch. 13 - Prob. 131ECh. 13 - Prob. 132ECh. 13 - Prob. 133ECh. 13 - Prob. 134ECh. 13 - Prob. 135ECh. 13 - Have each group member make a flashcard with one...Ch. 13 - Prob. 137ECh. 13 - Prob. 138ECh. 13 - Prob. 139ECh. 13 - Prob. 140ECh. 13 - Which compound is most soluble in octane (C8H18)?...Ch. 13 - Prob. 2SAQCh. 13 - A 500.0-mL sample of pure water is allowed to come...Ch. 13 - Prob. 4SAQCh. 13 - Prob. 5SAQCh. 13 - Prob. 6SAQCh. 13 - What is the vapor pressure of an aqueous ethylene...Ch. 13 - Prob. 8SAQCh. 13 - What mass of glucose (C6H12O6) should you dissolve...Ch. 13 - Which aqueous solution has the highest boiling...Ch. 13 - The osmotic pressure of a solution containing 22.7...Ch. 13 - The enthalpy of solution for NaOH is -44.6 kJ/mol....Ch. 13 - A 2.4-m aqueous solution of an ionic compound with...Ch. 13 - A solution is an equimolar mixture of two volatile...Ch. 13 - An aqueous solution is in equilibrium with a...
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- In a mountainous location, the boiling point of pure water is found to be 95C. How many grams of sodium chloride must be added to 1 kg of water to bring the boiling point back to 100C? Assume that i = 2.arrow_forwardCooking A cook prepares a solution for boiling by adding12.5 g of NaCl to a pot holding 0.750 L of water. Atwhat temperature should the solution in the pot boil?Use Table 14.5 for needed data.arrow_forwardSodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride (CaCl2) is sometimes used for this purpose too. Let us compare the effectiveness of equal masses of these two compounds in lowering the freezing point of water, by calculating the freezing point depression of solutions containing 200. g of each salt in 1.00 kg of water. (An advantage of CaCl2 is that it acts more quickly because it is hygroscopic, that is. it absorbs moisture from the air to give a solution and begin the process. A disadvantage is that this compound is more costly.)arrow_forward
- Consider two hypothetical pure substances, AB(s) and XY(s). When equal molar amounts of these substances are placed in separate 500-mL samples of water, they undergo the following reactions: AB(s)A+(aq)+B(aq)XY(s)XY(aq) a Which solution would you expect to have the lower boiling point? Why? b Would you expect the vapor pressures of the two solutions to be equal? If not, which one would you expect to have the higher vapor pressure? c Describe a procedure that would make the two solutions have the same boiling point. d If you took 250 mL of the AB(aq) solution prepared above, would it have the same boiling point as the original solution? Be sure to explain your answer. e The container of XY(aq) is left out on the bench top for several days, which allows some of the water to evaporate from the solution. How would the melting point of this solution compare to the melting point of the original solution?arrow_forwardThe solubility of NaCl in water at 100 C is 39.1 g/100. g of water Calculate the boiling point of this solution. (Assume i = 1.85 for NaCl.)arrow_forwardInstead of using NaCl to melt the ice on your sidewalk you decide to use CaCl2. If you add 35.0 g of CaCl2 to 150. g of water, what is the freezing point of the solution? (Assume i = 2.7 for CaCl2.)arrow_forward
- a. Use the following data to calculate the enthalpy of hydration for calcium chloride and calcium iodide. Lattice Energy Hsoln CaCl2(s) 2247kj/mol 46kj/mol Cal2(s) 2059kj/mol 104kj/mol b. Based on your answers to part a, which ion, Cl or I, is more strongly attracted to water?arrow_forwardRefer to Figure 13.10 ( Sec. 13-4b) to answer these questions. (a) Does a saturated solution occur when 65.0 g LiCl is present in 100 g H2O at 40 C? Explain your answer. (b) Consider a solution that contains 95.0 g LiCl in 100 g H2O at 40 C. Is the solution unsaturated, saturated, or supersaturated? Explain your answer. (c) Consider a solution that contains 50. g Li2SO4 in 200. g H2O at 50 C. Is this solution unsaturated, saturated, or supersaturated? Explain your answer. Figure 13.10 Solubility of ionic compounds versus temperature.arrow_forwardYou have read that adding a solute to a solvent can both increase the boiling point and decrease the freezing point. A friend of yours explains it to you like this: The solute and solvent can be like salt in water. The salt gets in the way of freezing in that it blocks the water molecules from joining together. The salt acts like a strong bond holding the water molecules together so that it is harder to boil. What do you say to your friend?arrow_forward
- Equal numbers of moles of two soluble, substances, substance A and substance B, are placed into separate 1.0-L samples of water. a The water samples are cooled. Sample A freezes at 0.50C, and Sample B freezes at l.00C. Explain how the solutions can have different freezing points. b You pour 500 mL of the solution containing substance B into a different beaker. How would the freezing point of this 500-mL portion of solution B compare to the freezing point of the 1.0-L sample of solution A? c Calculate the molality of the solutions of A and B. Assume that i = 1 for substance A. d If you were to add an additional 1.0 kg of water to solution B, what would be the new freezing point of the solution? Try to write an answer to this question without using a mathematical formula. e What concentration (molality) of substances A and B would result in both solutions having a freezing point of 0.25C? f Compare the boiling points, vapor pressure, and osmotic pressure of the original solutions of A and B. Dont perform the calculations; just state which is the greater in each ease.arrow_forwardWater at 25 C has a density of 0.997 g/cm3. Calculate the molality and molarity of pure water at this temperature.arrow_forwardConsider the following aqueous solutions: (i) 0.20 m HOCH2CH2OH (nonvolatile, nonelectrolyte); (ii) 0.10 m CaCl2 (iii) 0.12 m KBr; and (iv) 0.12 m Na2SO4. (a) Which solution has the highest boiling point? (b) Which solution has the lowest freezing point? (c) Which solution has the highest water vapor pressure?arrow_forward
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY