Chemistry: The Molecular Nature of Matter
7th Edition
ISBN: 9781118516461
Author: Neil D. Jespersen, Alison Hyslop
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 12, Problem 84RQ
A solution of 14 g of a nonvolatile, nondissociating compound in 0.10 kg of benzene boils at
Calculate the molecular mass of the unknown.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Chapter 12 Solutions
Chemistry: The Molecular Nature of Matter
Ch. 12 - Which substances will be soluble in water? (a)...Ch. 12 - Which substances will be soluble in nonpolar...Ch. 12 - Draw an enthalpy diagram for the endothermic...Ch. 12 - When potassium hydroxide is dissolved in water,...Ch. 12 - Prob. 5PECh. 12 - When sodium hydroxide is dissolved in water, the...Ch. 12 - At 25C and standard pressure, a hydrogen sulfide...Ch. 12 - How many grams of nitrogen and oxygen are...Ch. 12 - What volume of water at 20.0C(d=0.9982gmL-1) is...Ch. 12 - Prob. 10PE
Ch. 12 - Prob. 11PECh. 12 - Water freezes at a lower temperature when it...Ch. 12 - Prob. 13PECh. 12 - Prob. 14PECh. 12 - Prob. 15PECh. 12 - Prob. 16PECh. 12 - Dibutyl phthalate, C16H22O4 (molar mass...Ch. 12 - Prob. 18PECh. 12 - At , the vapor pressure of cyclohexane, a nonpolar...Ch. 12 - Using the information from Practice Exercise...Ch. 12 - In making candy, a certain recipe calls for...Ch. 12 - How many grams of glucose (molar mass = 180.9 g...Ch. 12 - A solution made by dissolving 3.46 g of an unknown...Ch. 12 - Prob. 24PECh. 12 - What is the osmotic pressure, in mm Hg and mm H2O,...Ch. 12 - What is the osmotic pressure in torr of a 0.0115 M...Ch. 12 - Estimate the molecular mass of a protein when...Ch. 12 - Prob. 28PECh. 12 - Calculate the freezing point of aqueous 0.237mLiCl...Ch. 12 - Determine the freezing point of aqueous solutions...Ch. 12 - Prob. 31PECh. 12 - Prob. 32PECh. 12 - Intermolecular Forces and the Formation of...Ch. 12 - Intermolecular Forces and the Formation of...Ch. 12 - Intermolecular Forces and the Formation of...Ch. 12 - Intermolecular Forces and the Formation of...Ch. 12 - Intermolecular Forces and the Formation of...Ch. 12 - Intermolecular Forces and the Formation of...Ch. 12 - Prob. 7RQCh. 12 - Intermolecular Forces and the Formation of...Ch. 12 - Heats of Solution
12.9 The value of for a soluble...Ch. 12 - Heats of Solution Referring to Question 12.9,...Ch. 12 - Heats of Solution Which would be expected to have...Ch. 12 - Heats of Solution
12.12. Suggest a reason why the...Ch. 12 - Prob. 13RQCh. 12 - Prob. 14RQCh. 12 - Heat of solution When a certain solid dissolves in...Ch. 12 - Heat of solution
12.16 If the value of for the...Ch. 12 - Prob. 17RQCh. 12 - Solubility as a Function of Temperature
12.18 If a...Ch. 12 - Solubility as a Function of Temperature Anglers...Ch. 12 - Henry's Law
12.20 What is Henry’s law?
Ch. 12 - Henry's Law
12.21 Mountain streams often contain...Ch. 12 - Henry's Law Why is ammonia so much more soluble in...Ch. 12 - Prob. 23RQCh. 12 - Prob. 24RQCh. 12 - Prob. 25RQCh. 12 - Prob. 26RQCh. 12 - Concentration Units Suppose a 1.0 m solution of a...Ch. 12 - Colligative Properties What specific fact about a...Ch. 12 - Colligative Properties
12.29. What is Raoult’s...Ch. 12 - Colligative Properties Why does a nonvolatile...Ch. 12 - Prob. 31RQCh. 12 - Prob. 32RQCh. 12 - Prob. 33RQCh. 12 - Prob. 34RQCh. 12 - Prob. 35RQCh. 12 - Prob. 36RQCh. 12 - Prob. 37RQCh. 12 - Prob. 38RQCh. 12 - Colligative Properties
12.39 When a solid is...Ch. 12 - Colligative Properties
12.40 What is the...Ch. 12 - Prob. 41RQCh. 12 - Colligative Properties What is the vant Hoff...Ch. 12 - Prob. 43RQCh. 12 - Prob. 44RQCh. 12 - Prob. 45RQCh. 12 - Prob. 46RQCh. 12 - Heterogeneous Mixtures What is the Tyndall effect?Ch. 12 - Heterogeneous Mixtures
12.48 What is a micelle,...Ch. 12 - Heat of Solution For an ionic compound dissolving...Ch. 12 - Heat of solution
12.50 Consider the formation of a...Ch. 12 - Henry's Law The solubility of methane, the chief...Ch. 12 - Henry's Law If the solubility of a gas in water is...Ch. 12 - At 740 torr and 20.0C, nitrogen has a solubility...Ch. 12 - Hydrogen gas has a solubility in water of...Ch. 12 - 12.55. If 100.0 mL of water is shaken with oxygen...Ch. 12 - 12.56 Helium gas can be used to displace other...Ch. 12 - Concentration Units Muriatic acid is the...Ch. 12 - Prob. 58RQCh. 12 - What mass of a 0.853 molal solution of iron(III)...Ch. 12 - In order to conduct three experiments that...Ch. 12 - Prob. 61RQCh. 12 - A solution of acetic acid, CH3COOH, has a...Ch. 12 - Prob. 63RQCh. 12 - Botulinum toxin is one of the most acutely toxic...Ch. 12 - A solution of fructose, C6H12O6, a sugar found in...Ch. 12 - Prob. 66RQCh. 12 - Prob. 67RQCh. 12 - Prob. 68RQCh. 12 - Prob. 69RQCh. 12 - An aqueous solution of isopropyl alcohol, C3H8O,...Ch. 12 - Sodium nitrate, NaNO3, is sometimes added to...Ch. 12 - In an aqueous solution of sulfuric acid, the...Ch. 12 - Colligative Properties At 25C, the vapor pressure...Ch. 12 - Colligative Properties The vapor pressure of water...Ch. 12 - 12.75 At the vapor pressures of benzene and...Ch. 12 - Pentane (C5HI2)andheptane(C7HI6) are two...Ch. 12 - *12.77 Benzene and toluene help achieve good...Ch. 12 - The vapor pressure of pure methanol, CH3OH, at 33C...Ch. 12 - A solution containing 8.3 g of a nonvolatile,...Ch. 12 - At 21.0C, a solution of 18.26 g of a nonvolatile,...Ch. 12 - 12.81 How many grams of sucrose are needed to...Ch. 12 - Prob. 82RQCh. 12 - A solution of 12.00 g of an unknown...Ch. 12 - 12.84 A solution of 14 g of a nonvolatile,...Ch. 12 - What are the molecular mass and molecular formula...Ch. 12 - Benzene reacts with hot concentrated nitric acid...Ch. 12 - 12.87 (a) Show that the following equation is...Ch. 12 - A saturated solution is made by dissolving 0.400 g...Ch. 12 - Prob. 89RQCh. 12 - How many grams of A1C13 would have to be dissolved...Ch. 12 - 12.91 What is the osmotic pressure, in torr, of a ...Ch. 12 - Below are the concentrations of the most abundant...Ch. 12 - 12.93 What is the expected freezing point of a...Ch. 12 - Prob. 94RQCh. 12 - 12.95 The van’t Hoff factor for the solute in is...Ch. 12 - 12.96 What is the expected van’t Hoff factor for ...Ch. 12 - Prob. 97RQCh. 12 - *12.98 The “bends” is a medical emergency caused...Ch. 12 - In order for mosquitos to survive the cold winter,...Ch. 12 - The vapor pressure of a mixture of 0.400 kg of...Ch. 12 - Ethylene glycol, C2H6O2, is used in many...Ch. 12 - What is the osmotic pressure in torr of a 0.010 M...Ch. 12 - The osmotic pressure of a dilute solution of a...Ch. 12 - Prob. 104RQCh. 12 - Consider an aqueous 1.00 m solution of Na3PO4,a...Ch. 12 - A 2.50 g sample of aluminum chloride and sodium...Ch. 12 - Prob. 107RQCh. 12 - A sample containing only iron(II) nitrate and...Ch. 12 - Prob. 109RQCh. 12 - Prob. 110RQCh. 12 - How many mL of 0.223MK2Cr2O7 are needed to...Ch. 12 - Prob. 112RQCh. 12 - A certain organic substance is soluble in solvent...Ch. 12 - Prob. 114RQCh. 12 - Prob. 115RQCh. 12 - Having had some laboratory experience by now,...Ch. 12 - 12.117 This chapter focused on the physical...Ch. 12 - 12.118 Using the principles developed in this...Ch. 12 - Prob. 119RQCh. 12 - Prob. 120RQCh. 12 - Prob. 121RQCh. 12 - Consider a solution that has the maximum amount of...Ch. 12 - 12.123 When a 10.0 molar solution of sodium...
Additional Science Textbook Solutions
Find more solutions based on key concepts
The following reaction has a value of G = 2.1kJ/mol(0.50kcaI/mol). CH3Br + H2S CH3 SH + HBr a. Calculate Keq a...
Organic Chemistry (9th Edition)
A compound that contains only C and H was burned in excess O2 to give CO2 and H2O. When 0.270 g of the compound...
General Chemistry: Atoms First
Determine [OH], [H+], and the pH of each of the following solutions. a. 1.0 M KCl b. 1.0 M KC2H3O2
Chemistry
8.63 Two flasks of equal volume and at the same temperature contain different gases. One flask contains 10.0 g ...
Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition) - Standalone book
Calculate the lattice energy of CaCl2 using a Born-Haber cycle and data from Appendices F and L and Table 7.5. ...
Chemistry & Chemical Reactivity
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Calculate the molality of a solution made by dissolving 115.0 g ethylene glycol, HOCH2CH2OH, in 500. mL water. The density of water at this temperature is 0.978 g/mL. Calculate the molarity of the solution.arrow_forwardWhat would be the freezing point of a solution formed by adding 1.0 mole of glucose (a molecular compound) to the following amounts of water? a. 250 g (0.25 kg) b. 500 g (0.500 kg) c. 1000 g (1.000 kg) d. 2000 g (2.000 kg)arrow_forwardWhich solute has the greatest effect on the boiling pointof 1.00 kg of water: 50.0 g of strontium chloride (SrCl2) or 150.0 g of carbon tetrachloride (CCl4) ? Justify youranswer.arrow_forward
- A forensic chemist is given a white solid that is suspected of being pure cocaine (C17H21NO4, molar mass = 303.35 g/mol). She dissolves 1.22 0.01 g of the solid in 15.60 0.01 g benzene. The freezing point is lowered by 1.32 0.04C. a. What is the molar mass of the substance? Assuming that the percent uncertainty in the calculated molar mass is the same as the percent uncertainty in the temperature change, calculate the uncertainty in the molar mass. b. Could the chemist unequivocally state that the substance is cocaine? For example, is the uncertainty small enough to distinguish cocaine from codeine (C18H21NO3, molar mass = 299.36 g/mol)? c. Assuming that the absolute uncertainties in the measurements of temperature and mass remain unchanged, how could the chemist improve the precision of her results?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_forwardCalcium chloride, CaCl2, has been used to melt ice from roadways. Given that the saturated solution is 32% CaCl2 by mass, estimate the freezing point.arrow_forward
- Water at 25 C has a density of 0.997 g/cm3. Calculate the molality and molarity of pure water at this temperature.arrow_forwardThe dispersed phase of a certain colloidal dispersion consists of spheres of diameter 1.0 102 nm. (a) What are the volume (V=43r2) and surface area (A = r2) of each sphere? (b) How many spheres are required to give a total volume of 1.0 cm3? What is the total surface area of these spheres in square meters?arrow_forwardA 1.00 mol/kg aqueous sulfuric acid solution, H2SO4,freezes at 4.04 C. Calculate i, the vant Hoff factor,for sulfuric acid in this solution.arrow_forward
- The organic salt [(C4H9)4N][ClO4] consists of the ions (C4H9)4N+ and ClO4. The salt dissolves in chloroform. What mass (in grams) of the salt must have been dissolved if the boiling point of a solution of the salt in 25.0 g chloroform is 63.20 C? The normal boiling point of chloroform is 61.70 C and Kb = 3.63 C kg mol1. Assume that the salt dissociates completely into its ions in solution.arrow_forwardThe vapor pressures of several solutions of water-propanol (CH3CH2CH2OH) were determined at various compositions, with the following data collected at 45C: H2O Vapor pressure(torr) 0 74.0 0.15 77.3 0.37 80.2 0.54 81.6 0.69 80.6 0.83 78.2 1.00 71.9 a. Are solutions of water and propanol ideal? Explain. b. Predict the sign of Hsoln for water-propanol solutions. c. Are the interactive forces between propanol and water molecules weaker than, stronger than, or equal to the interactive forces between the pure substances? Explain. d. Which of the solutions in the data would have the lowest normal boiling point?arrow_forwardFreezing point depression is one means of determining the molar mass of a compound. The freezing point depression constant of benzene is 5.12 C/m. a. When a 0.503 g sample of the white crystalline dimer is dissolved in 10.0 g benzene, the freezing point of benzene is decreased by 0542 C. Verify that the molar mass of the dimer is 475 g/mol when determined by freezing point depression. Assume no dissociation of the dimer occurs. b. The correct molar mass of the dimer is 487 g/mol. Explain why the dissociation equilibrium causes the freezing point depression calculation to yield a lower molar mass for the dimer.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning
General, Organic, and Biological Chemistry
Chemistry
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:Cengage Learning
Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY