Chemistry: The Molecular Nature of Matter
7th Edition
ISBN: 9781118516461
Author: Neil D. Jespersen, Alison Hyslop
Publisher: WILEY
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Textbook Question
Chapter 11, Problem 55RQ
Energy and Changes of State
A burn caused by steam is much more serious than one caused by the same amount of boiling water. Why?
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Students have asked these similar questions
Why is the heat of vaporization of water greater at room temperature than it is at its boiling point?
Liquid ammonia can be used as a refrigerant and heat transfer fluid. How much energy is required to convert 25.0g of NH3(l) at -76 degrees Celsius into NH3(g)? In other words how much heat is needed to turn the liquid ammonia into a gas?
molar mass: 17.03g/mol
normal boiling point: -33.4 degrees Celsius
specific heat of NH3(l): 4.7 J/g . Degrees Celsius
specific heat of NH3(g): 2.2J/g . Degrees Celsius
molar heat of vaporization: 23.5 kj/mol
Interpreting a heating curve.
Chapter 11 Solutions
Chemistry: The Molecular Nature of Matter
Ch. 11 - Prob. 1PECh. 11 - List the following in order of their boiling...Ch. 11 - Propylamine and trimethylamine have the same...Ch. 11 - People living in arid, dry, regions can cool their...Ch. 11 - Use the kinetic molecular theory to explain why...Ch. 11 - Considering Figure 11.24, in which direction...Ch. 11 - Suppose a liquid is in equilibrium with its vapor...Ch. 11 - The Dead Sea is approximately 1300 ft below sea...Ch. 11 - The atmospheric pressure at the summit of Mt....Ch. 11 - Benzene has a boiling point of 80.1C, and a...
Ch. 11 - Steam can cause more severe bums than water, even...Ch. 11 - The equilibrium line from point B to D in Figure...Ch. 11 - What phase changes will occur if water at 20C and...Ch. 11 - Prob. 14PECh. 11 - Use Le Chtelier's principle to predict how a...Ch. 11 - Prob. 16PECh. 11 - At 0.00C, hexane, C6H14, has a vapor pressure of...Ch. 11 - Prob. 18PECh. 11 - Chromium crystallizes in a body-centered cubic...Ch. 11 - What is the ratio of the ions in the unit cell of...Ch. 11 - Polonium is the only metal known to crystallize in...Ch. 11 - Use the data in the previous Practice Exercise to...Ch. 11 - Stearic acid is an organic acid that has a chain...Ch. 11 - Boron nitride, which has the empirical formula BN,...Ch. 11 - Crystals of elemental sulfur are easily crushed...Ch. 11 - 11.1 Why are the intermolecular attractive forces...Ch. 11 - Compare the behavior of gases, liquids, and solids...Ch. 11 - Prob. 3RQCh. 11 - Why do intermolecular attractions weaken as the...Ch. 11 - Prob. 5RQCh. 11 - Define polarizability. How does this property...Ch. 11 - Prob. 7RQCh. 11 - 11.8 Which nonmetals, besides hydrogen, are...Ch. 11 - Prob. 9RQCh. 11 - Which would give a stronger iondipole interaction...Ch. 11 - Prob. 11RQCh. 11 - Prob. 12RQCh. 11 - Intermolecular Forces and Physical...Ch. 11 - Prob. 14RQCh. 11 - Intermolecular Forces and Physical Properties Name...Ch. 11 - Prob. 16RQCh. 11 - Prob. 17RQCh. 11 - Prob. 18RQCh. 11 - Prob. 19RQCh. 11 - Prob. 20RQCh. 11 - Intermolecular Forces and Physical...Ch. 11 - Prob. 22RQCh. 11 - Prob. 23RQCh. 11 - Prob. 24RQCh. 11 - Prob. 25RQCh. 11 - Prob. 26RQCh. 11 - Prob. 27RQCh. 11 - Prob. 28RQCh. 11 - Prob. 29RQCh. 11 - Changes of State and Dynamic Equilibrium What...Ch. 11 - Prob. 31RQCh. 11 - Changes of State and Dynamic Equilibrium
11.32 Why...Ch. 11 - Changes of State and Dynamic Equilibrium
11.33...Ch. 11 - Changes of State and Dynamic Equilibrium
11.34....Ch. 11 - Prob. 35RQCh. 11 - Prob. 36RQCh. 11 - Vapor Pressures of Liquids and Solids
11.37...Ch. 11 - Prob. 38RQCh. 11 - Vapor Pressures of Liquids and Solids 11.39 What...Ch. 11 - Vapor Pressures of Liquids and Solids Why does...Ch. 11 - Vapor Pressures of Liquids and Solids Why do we...Ch. 11 - Prob. 42RQCh. 11 - Boiling Points of Liquids Why does the boiling...Ch. 11 - Boiling Points of Liquids Mt. Kilimanjaro in...Ch. 11 - Boiling Points of Liquids
11.45. When liquid...Ch. 11 - Prob. 46RQCh. 11 - Boiling Points of Liquids Butane, C4H10, has a...Ch. 11 - Boiling Points of Liquids
11.48. Why does have a...Ch. 11 - Boiling Points of Liquids An HF bond is more polar...Ch. 11 - Energy and Changes of State The following is a...Ch. 11 - Energy and Changes of State
11.51 Why is larger...Ch. 11 - Energy and Changes of State Would the heat of...Ch. 11 - Energy and Changes of State Hurricanes can travel...Ch. 11 - Energy and Changes of State Ethanol (grain...Ch. 11 - Energy and Changes of State A burn caused by steam...Ch. 11 - Energy and Changes of State
11.56 Arrange the...Ch. 11 - Prob. 57RQCh. 11 - Phase Diagrams
11.58 Define critical temperature...Ch. 11 - Phase Diagrams What is a supercritical fluid? Why...Ch. 11 - Phase Diagrams
11.60 What phases of a substance...Ch. 11 - Prob. 61RQCh. 11 - Prob. 62RQCh. 11 - Phase Diagrams Sketch a generic phase diagram that...Ch. 11 - Phase Diagrams
11.64 What is the significance of...Ch. 11 - Prob. 65RQCh. 11 - Le Chtelier's Principle and Changes of State State...Ch. 11 - Le Châtelier's Principle and Changes of...Ch. 11 - Le Chtelier's Principle and Changes of State Use...Ch. 11 - Le Chtelier's Principle and Changes of State Use...Ch. 11 - Le Châtelier's Principle and Changes of...Ch. 11 - Determining Heats of Vaporization According to the...Ch. 11 - Determining Heats of Vaporization Why can't...Ch. 11 - Determining Heats of Vaporization Why can any...Ch. 11 - Prob. 74RQCh. 11 - Prob. 75RQCh. 11 - Prob. 76RQCh. 11 - Determining the Structure of Solids What...Ch. 11 - Determining the Structure of Solids
11.78 The...Ch. 11 - The figure below illustrates the way the atoms of...Ch. 11 - Make a sketch of a layer of sodium ions and...Ch. 11 - 11.81 How do the crystal structures of copper and...Ch. 11 - Determining the Structure of Solids
11.82 What...Ch. 11 - Determining the Structure of Solids Only 14...Ch. 11 - Determining the Structure of Solids Write the...Ch. 11 - Determining the Structure of Solids Why cant...Ch. 11 - Prob. 86RQCh. 11 - Crystal Types and Physical Properties
11.87 What...Ch. 11 - Prob. 88RQCh. 11 - Prob. 89RQCh. 11 - Prob. 90RQCh. 11 - Intermolecular Forces and Physical Properties What...Ch. 11 - Intermolecular Forces and Physical Properties What...Ch. 11 - Intermolecular Forces and Physical Properties...Ch. 11 - Prob. 94RQCh. 11 - 11.95 Consider the compounds (chloroform, an...Ch. 11 - 11.96 Carbon dioxide does not liquefy at...Ch. 11 - Prob. 97RQCh. 11 - Prob. 98RQCh. 11 - Prob. 99RQCh. 11 - Prob. 100RQCh. 11 - 11.101 The following are the vapor pressures of...Ch. 11 - 11.102 The boiling points of some common...Ch. 11 - 11.103 Using the information in Problem 11.101,...Ch. 11 - 11.104 Using the information in Problem 11.102,...Ch. 11 - 11.105 What intermolecular forces must the...Ch. 11 - 11.106 What intermolecular attractions will be...Ch. 11 - Energy and Changes of State The molar heat of...Ch. 11 - Energy and Changes of State The molar heat of...Ch. 11 - *11.109 Suppose 45.0 g of water at is added to...Ch. 11 - A cube of solid benzene (C6H6) at its melting...Ch. 11 - Prob. 111RQCh. 11 - Prob. 112RQCh. 11 - Prob. 113RQCh. 11 - Prob. 114RQCh. 11 - Prob. 115RQCh. 11 - Prob. 116RQCh. 11 - Determining Heats of Vaporization
*11.117 Mercury...Ch. 11 - Prob. 118RQCh. 11 - Prob. 119RQCh. 11 - *11.120 If the vapor pressure of ethylene glycol...Ch. 11 - Determining the Structure of Solids
11.121 How...Ch. 11 - 11.122 How many copper atoms are within the...Ch. 11 - The atomic radius of nickel is 1.24 . Nickel...Ch. 11 - 11.124 Silver forms face-centered cubic crystals....Ch. 11 - Potassium ions have a radius of 133 pm, and...Ch. 11 - 11.126 The unit cell edge in sodium chloride has a...Ch. 11 - Prob. 127RQCh. 11 - Prob. 128RQCh. 11 - *11.129 Cesium chloride forms a simple cubic...Ch. 11 - 11.130 Rubidium chloride has the rock salt...Ch. 11 - Prob. 131RQCh. 11 - Crystal Types and Physical Properties Elemental...Ch. 11 - Prob. 133RQCh. 11 - Prob. 134RQCh. 11 - Prob. 135RQCh. 11 - Crystal Types and Physical Properties
11.1 36...Ch. 11 - List all of the attractive forces that exist in...Ch. 11 - 11.138 Calculate the mass of water vapor present...Ch. 11 - 11.139 Should acetone molecules be attracted to...Ch. 11 - The following thermochemical equations apply to...Ch. 11 - Melting point is sometimes used as an indication...Ch. 11 - When warm, moist air sweeps in from the ocean and...Ch. 11 - *11.143 Gold crystallizes in a face-centered cubic...Ch. 11 - Gold crystallizes with a face-centered cubic unit...Ch. 11 - Identify the type of unit cell belonging to the...Ch. 11 - Calculate the amount of empty space (in pm3) in...Ch. 11 - Silver has an atomic radius of 144 pm. What would...Ch. 11 - Potassium chloride crystallizes with the rock salt...Ch. 11 - Prob. 149RQCh. 11 - There are 270 Calories in a Hersheys* Milk...Ch. 11 - Prob. 151RQCh. 11 - *11.152 Frecze-drying is a process used to...Ch. 11 - When reporting the vapor pressure for a substance...Ch. 11 - 11.154 Supercritical is used to decaffeinate...Ch. 11 - 11.155 Freshly precipitated crystals are usually...Ch. 11 - 11.156 What are three “everyday” applications of...Ch. 11 - Prob. 157RQCh. 11 - 11.158 Galileo's thermometer is a tube of liquid...Ch. 11 - Use the Clausius-Clapeyron equation to plot the...Ch. 11 - Prob. 160RQCh. 11 - Earlier in this chapter it was noted that the...
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- If you get boiling water at 100 C on your skin, it burns. If you get 100 C steam on your skin, it burns much more severely. Explain why this is so.arrow_forwardWhy are steam burns so much worse than water burns even if the H2O is at the same temperature for both phases? Hint: Consider the heat of vaporization of water.arrow_forwardExplain why the enthalpies of vaporization of the following substances increase in the order CH4NH3H2O, even though all three substances have approximately the same molar mass.arrow_forward
- A special vessel (see Fig. 10.45) contains ice and supercooled water (both at 10C) connected by vapor space. Describe what happens to the amounts of ice and water as time passes.arrow_forwardLiquid butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 35.5 g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas? The heat of vaporization of butane is 21.3 kJ/mol.arrow_forwardConsider the iodine monochloride molecule, ICI. Because chlorine is more electronegative than iodine, this molecule is a dipole. How would you expect iodine monochloride molecules in the gaseous state to orient themselves with respect to each other as the sample is cooled and the molecules begin to aggregate? Sketch the orientation you would expect.arrow_forward
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