Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Textbook Question
Chapter 10, Problem 43E
Explain the following observations:
(a) It takes longer to cook an egg in Ft. Davis, Texas (altitude, 5000 feet above sea level) than it does in Boston (at sea level).
(b) Perspiring is a mechanism for cooling the body.
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Explain the effect of temperature on the extent of physical and chemicaladsorption.
A 5.00 g-sample of KOH at 25.0 C was added to 100.0 g of H2O(l) at room temperature inside an insulated cup calorimeter, and the contents were stirred. After all the KOH(s) dissolved, the temperature of the solution had increased. Based on the information given, which of the following best justifies the claim that the dissolution of KOH is a thermodynamically favorable process?
A. The forces between the ions and the water molecules are stronger than the forces between water molecules, thus, delta H < 0. Also, the ions become less dispersed as KOH(s) dissolves, thus delta S > 0. Therefore, delta G < 0.
B. The energy require to break the bonds between the ions in the solid is less than that released as the ion-dipole attractions form during solvation, thus delta H < 0. Also, the ions become widely dispersed as KOH(s) dissolved, thus delta S > 0. Therefore, delta G < 0.
C. The average kinetic energy of the particles increases, resulting in delta H > 0. Also, the…
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Chapter 10 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 10 - In terms of their bulk properties, how do liquids...Ch. 10 - In terms of the kinetic molecular theory, in what...Ch. 10 - In terms of the kinetic molecular theory, in what...Ch. 10 - Explain why liquids assume the shape of any...Ch. 10 - What is the evidence that all neutral atoms and...Ch. 10 - Open the PhET States of Matter Simulation...Ch. 10 - Define the following and give an example of each:...Ch. 10 - The types of intermolecular forces in a substance...Ch. 10 - Why do the boiling points of the noble gases...Ch. 10 - Neon and HF have approximately the same molecular...
Ch. 10 - Arrange each of the following sets of compounds in...Ch. 10 - The molecular mass of butanol, C4H9OH, is 74.14;...Ch. 10 - On the basis of intermolecular attractions,...Ch. 10 - On the basis of dipole moments and/or hydrogen...Ch. 10 - The melting point of H2O(s) is O C. 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Explain why the...Ch. 10 - What feature characterizes the dynamic equilibrium...Ch. 10 - Identify two common observations indicating some...Ch. 10 - Identify two common observations indicating some...Ch. 10 - What is the relationship between the...Ch. 10 - What is the relationship between the...Ch. 10 - Why does spilled gasoline evaporate more rapidly...Ch. 10 - Carbon tetrachloride, CCl4, was once used as a dry...Ch. 10 - When is the boiling point of a liquid equal to its...Ch. 10 - How does the boiling of a liquid differ from its...Ch. 10 - Use the information in Figure 10.24 to estimate...Ch. 10 - A syringe at a temperature of 20 C is filled with...Ch. 10 - Explain the following observations: (a) It takes...Ch. 10 - The enthalpy of vaporization of water is larger...Ch. 10 - Explain why the molar enthalpies of vaporization...Ch. 10 - Explain why the enthalpies of vaporization of the...Ch. 10 - The enthalpy of vaporization of CO2(l) is 9.8...Ch. 10 - The hydrogen fluoride molecule, HF, is more polar...Ch. 10 - Ethyl chloride (boiling point, 13 C) is used as a...Ch. 10 - Which contains the compounds listed correctly in...Ch. 10 - How much heat is required to convert 422 g of...Ch. 10 - Evaporation of sweat requires energy and thus take...Ch. 10 - Titanium tetrachloride, TiCl4, has a melting point...Ch. 10 - From the phase diagram for water (Figure 10.31),...Ch. 10 - What phase changes will take place when water is...Ch. 10 - Pressure cookers allow food to cook faster because...Ch. 10 - From the phase diagram for carbon dioxide in...Ch. 10 - Determine the phase changes that carbon dioxide...Ch. 10 - Consider a cylinder containing a mixture of liquid...Ch. 10 - Dry ice, CO2(s) , does not melt at atmospheric...Ch. 10 - If a severe storm results in the loss of...Ch. 10 - Is it possible to liquefy nitrogen at room...Ch. 10 - Elemental carbon has one gas phase, one liquid...Ch. 10 - What types of liquids typically form amorphous...Ch. 10 - At very low temperatures oxygen, O2, freezes and...Ch. 10 - As it cools, olive oil slowly solidifies and forms...Ch. 10 - Explain why ice, which is a crystalline solid, has...Ch. 10 - Identify the type of crystalline solid (metallic,...Ch. 10 - Identify the type of crystalline solid (metallic,...Ch. 10 - Classify each substance in the table as either a...Ch. 10 - Classify each substance in the table as either a...Ch. 10 - Identify the following substances as ionic,...Ch. 10 - Substance A is shiny, conducts electricity well,...Ch. 10 - Substance B is hard, does not conduct electricity,...Ch. 10 - Describe the crystal structure of iron, which...Ch. 10 - Describe the crystal structure of Pt, which...Ch. 10 - What is the coordination number of a chromium atom...Ch. 10 - What is the coordination number of an aluminum...Ch. 10 - Cobalt metal crystallizes in a hexagonal closest...Ch. 10 - Nickel metal crystallizes in a cubic closest...Ch. 10 - Tungsten crystallizes in a body-centered cubic...Ch. 10 - Platinum (atomic radius =1.38) crystallizes in a...Ch. 10 - Barium crystallizes in a body-centered cubic unit...Ch. 10 - Aluminum (atomic radius = 1.43 ) crystallizes in a...Ch. 10 - The density of aluminum is 2.7 g/cm3; that of...Ch. 10 - The free space in a metal may be found by...Ch. 10 - Cadmium sulfide, sometimes used as a yellow...Ch. 10 - A compound of cadmium, tin, and phosphorus is used...Ch. 10 - What is the formula of the magnetic oxide of...Ch. 10 - A compound containing zinc, aluminum, and sulfur...Ch. 10 - A compound of thallium and iodine crystallizes in...Ch. 10 - Which of the following elements reacts with sulfur...Ch. 10 - What is the percent by mass of titanium in rutile,...Ch. 10 - Explain why the chemically similar alkali metal...Ch. 10 - As minerals were formed from the molten magma,...Ch. 10 - Rubidium iodide crystallizes with a cubic unit...Ch. 10 - One of the various manganese oxides crystallizes...Ch. 10 - NaH crystallizes with the same ciystal structure...Ch. 10 - Thallium(I) iodide crystallizes with the same...Ch. 10 - A cubic unit cell contains manganese ions at the...Ch. 10 - What is the spacing between crystal planes that...Ch. 10 - A diffracrometer using X-rays with a wavelength of...Ch. 10 - A metal with spacing between planes equal to...Ch. 10 - Gold crystallizes in a face-centered cubic unit...Ch. 10 - When an electron in an excited molybdenum atom...
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