Chemistry & Chemical Reactivity
10th Edition
ISBN: 9781337399074
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Textbook Question
Chapter 11, Problem 47SCQ
Account for these facts:
- (a) Although ethanol (C2H5OH) (bp, 80 °C) has a higher molar mass than water (bp, 100 °C), the alcohol has a lower boiling point.
- (b) Mixing 50 mL of ethanol with 50 mL of water produces a solution with a volume slightly less than 100 mL.
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During the lecture, we calculated the Debye length at physiological salt concentrations and temperature, i.e. at an ionic strength of 150 mM (i.e. 0.150 mol/l) and a temperature of T=310 K. We predicted that electrostatic interactions are effectively screened beyond distances of 8.1 Å in solutions with a physiological salt concentration.
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Chapter 11 Solutions
Chemistry & Chemical Reactivity
Ch. 11.2 - Which should have the more negative hydration...Ch. 11.3 - Using structural formulas, describe the hydrogen...Ch. 11.4 - Prob. 11.3CYUCh. 11.5 - Prob. 11.4CYUCh. 11.6 - The molar enthalpy of vaporization of methanol,...Ch. 11.6 - Prob. 11.6CYUCh. 11.6 - Prob. 1.1ACPCh. 11.6 - Prob. 1.2ACPCh. 11.6 - Prob. 2.1ACPCh. 11.6 - Prob. 2.2ACP
Ch. 11 - Prob. 1PSCh. 11 - Intermolecular forces: What type of forces must be...Ch. 11 - Prob. 3PSCh. 11 - Prob. 4PSCh. 11 - Considering intermolecular forces in the pure...Ch. 11 - Considering intermolecular forces in the pure...Ch. 11 - Prob. 7PSCh. 11 - Which of the following compounds would be expected...Ch. 11 - Prob. 9PSCh. 11 - When salts of Mg2+, Na+, and Cs+ are placed in...Ch. 11 - Prob. 11PSCh. 11 - The enthalpy of vaporization of liquid mercury is...Ch. 11 - Answer the following questions using Figure 11.12:...Ch. 11 - Answer the following questions using Figure 11.12:...Ch. 11 - Prob. 15PSCh. 11 - Refer to Figure 11.12 to answer these questions:...Ch. 11 - Which member of each of the following pairs of...Ch. 11 - Place the following four compounds in order of...Ch. 11 - Prob. 19PSCh. 11 - You are comparing three different substances, A,...Ch. 11 - Equilibrium vapor pressures of benzene, C6H6, at...Ch. 11 - Prob. 22PSCh. 11 - Can carbon monoxide (Tc = 132.9 K; Pc = 34.5 atm...Ch. 11 - Methane (CH4) cannot be liquefied at room...Ch. 11 - What is surface tension? Give an example...Ch. 11 - What factors affect the viscosity of a substance?...Ch. 11 - If a piece of filter paper (an absorbent paper...Ch. 11 - When water is placed in a buret it forms a concave...Ch. 11 - Prob. 29GQCh. 11 - What types of intermolecular forces are important...Ch. 11 - Which of the following salts, Li2SO4 or Cs2SO4, is...Ch. 11 - Prob. 32GQCh. 11 - Prob. 33GQCh. 11 - Prob. 34GQCh. 11 - Rank the following compounds in order of...Ch. 11 - Prob. 36GQCh. 11 - Prob. 37GQCh. 11 - The following data are the equilibrium vapor...Ch. 11 - Prob. 39ILCh. 11 - A hand boiler can be purchased in toy stores or at...Ch. 11 - Prob. 41ILCh. 11 - Prob. 42ILCh. 11 - Acetone, CH3COCH3, is a common laboratory solvent....Ch. 11 - Cooking oil floats on top of water. From this...Ch. 11 - Liquid ethylene glycol, HOCH2CH2OH, is one of the...Ch. 11 - Liquid methanol, CH3OH, is placed in a glass tube....Ch. 11 - Account for these facts: (a) Although ethanol...Ch. 11 - Prob. 48SCQCh. 11 - Prob. 49SCQCh. 11 - Prob. 50SCQCh. 11 - Prob. 51SCQCh. 11 - Prob. 52SCQCh. 11 - A fluorocarbon, CF4, has a critical temperature of...Ch. 11 - Prob. 55SCQCh. 11 - List four properties of liquids that are directly...Ch. 11 - List the following ions in order of hydration...Ch. 11 - Prob. 59SCQCh. 11 - An 8.82-g sample of Br2 is placed in an evacuated...Ch. 11 - Polarizability is defined as the extent to which...Ch. 11 - Prob. 62SCQCh. 11 - A pressure cooker (a kitchen appliance) is a pot...Ch. 11 - Vapor pressures of NH3() at several temperatures...Ch. 11 - Prob. 65SCQCh. 11 - Prob. 66SCQCh. 11 - Prob. 67SCQ
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