Introductory ChemIstry - Pearson Education

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IntroductoryChemistryTro IC5 FM i-xxxv v4.0.1.indd 112/11/13 1:04 PM

Tro IC5 FM i-xxxv v4.0.1.indd 212/11/13 1:04 PM

IntroductoryCHEMISTRyFifth EditionNivaldo J. TroWestmont CollegeBoston Columbus Indianapolis New York San Francisco Upper Saddle RiverAmsterdam Cape Town Dubai London Madrid Milan Munich Paris Montréal TorontoDelhi Mexico City São Paulo Sydney Hong Kong Seoul Singapore Taipei TokyoTro IC5 FM i-xxxv v4.0.1.indd 312/11/13 1:04 PM

Editor in Chief: Adam JaworskiAcquisitions Editor: Chris Hess, Ph.DDirector of Development: Jennifer HartExecutive Marketing Manager: Jonathan CottrellAssociate Team Lead, Program Management, Chemistry and Geosciences: Jessica MoroProgram Manager: Coleen MorrisonDevelopment Editor: Erin MulliganEditorial Assistant: Caitlin FalcoMarketing Assistant: Nicola HoustonTeam Lead, Project Management, Chemistry and Geosciences:Gina M. CheselkaProject Manager: Beth SweetenProduction Management: codeMantra, LLCCompositor: codeMantra, LLCIllustrator: Precision GraphicsImage Lead: Maya MelenchukPhoto Researcher: Peter Jardim, PreMedial GlobalText Permissions Manager: Michael FarmerText Permission Researcher: Electronic Publishing Services Inc.Interior Design Manager: Mark OngInterior Designer: Wanda Espana, WeeDesignCover Design Manager: Anthony GemmellaroCover Designer: Wanda Espana, WeeDesignOperations Specialist: Christy HallCover Art: Quade PaulCredits and acknowledgments borrowed from other sources and reproduced, with permission, in this textbookappear on the appropriate page within the text or on p. PC-1.Copyright 2015, 2011, 2009, 2006, 2003 Pearson Education, Inc., publishing as [imprint name and address]. Allrights reserved. Manufactured in the United States of America. This publication is protected by Copyright andpermission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrievalsystem, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, orlikewise. To obtain permission(s) to use material from this work, please submit a written request to PearsonEducation, Inc., Permissions Department, 1900 E. Lake Ave., Glenview, IL 60025. For information regardingpermissions, call (847) 486-2635.Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and the publisher was aware of a trademark claim, thedesignations have been printed in initial caps or all caps.Library of Congress Cataloging-in-Publication DataTro, Nivaldo J.Introductory chemistry / Nivaldo J. Tro. —5th ed.       volumes cmIncludes index.ISBN 978-0-321-91029-5 (extended) — ISBN 978-0-321-91873-4 (essentials)1.    Chemistry—Textbooks.      I.   Title.QD33.2.T76 2015540—dc2320130352351 2 3 4 5 6 7 8 9 10—CRK—17 16 15 14www.pearsonhighered.comTro IC5 FM i-xxxv v4.0.1.indd 4ISBN 10: 0-321-91029-X;ISBN 13: 978-0-321-91029-512/11/13 1:04 PM

To AnnieAbout the AuthorNivaldo Tro,is a Professor of Chemistry at WestmontCollege in Santa Barbara, California, where he has been a faculty member since 1990. He received his Ph.D. in chemistry fromStanford University for work on developing and using opticaltechniques to study the adsorption and desorption of moleculesto and from surfaces in ultra high vacuum. He then went on tothe University of California at Berkeley, where he did post doctoral research on ultrafast reaction dynamics in solution. Sincecoming to Westmont, Professor Tro has been awarded grants fromthe American Chemical Society Petroleum Research Fund, fromResearch Corporation, and from the National Science Foundationto study the dynamics of various processes occurring in thin adlayer films adsorbed on dielectric surfaces. He has been honoredas Westmont's outstanding teacher of the year three times andhas also received the college's outstanding researcher of the yearaward. Professor Tro lives in Santa Barbara with his wife, Ann, and their four children, Michael, Ali, Kyle, and Kaden.In his leisure time, Professor Tro enjoys mountain biking, surfing, reading to his children, and being outdoors with hisfamily. vTro IC5 FM i-xxxv v4.0.1.indd 512/11/13 1:04 PM

Brief ContentsPreface12345678910111213141516171819The Chemical Worldxviii2Measurement and Problem Solving12Matter and Energy56Atoms and Elements94Molecules and Compounds128Chemical Composition166Chemical Reactions204Quantities in Chemical Reactions248Electrons in Atoms and the Periodic Table284Chemical Bonding324Gases358Liquids, Solids, and Intermolecular Forces410Solutions446Acids and Bases486Chemical Equilibrium528Oxidation and Reduction574Radioactivity and Nuclear Chemistry610Organic Chemistry642Biochemistry696Appendix: Mathematics ReviewMR-1GlossaryG-1Answers to Odd-Numbered ExercisesA-1Photo CreditsIndexPC-1I-1 viTro IC5 FM i-xxxv v4.0.1.indd 612/11/13 1:04 PM

ContentsPrefacexviii1The ChemicalWorld21.11.21.31.43556Soda Pop FizzChemicals Compose Ordinary ThingsAll Things Are Made of Atoms and MoleculesThe Scientific Method: How Chemists ThinkEveryday Chemistry  Combustion and theScientific Method1.5A Beginning Chemist: How to SucceedChapter in reviewKey TermsExercises2Measurement andProblem Solving2.12.22.3Measuring Global TemperaturesScientific Notation: Writing Large and Small NumbersSignificant Figures: Writing Numbers to ReflectPrecision889101012131316Counting Significant Figures    17Exact Numbers    18Chemistry in the Media  The COBE Satelliteand Very Precise Measurements That Illuminate OurCosmic Past192.42.52.6Significant Figures in Calculations20Multiplication and Division    20Rounding    20Addition and Subtraction    21Calculations Involving Both Multiplication/Divisionand Addition/Subtraction    22The Basic Units of Measurement24The Base Units    24Prefix Multipliers    25Derived Units    26Problem Solving and Unit ConversionConverting Between Units    27General Problem-Solving Strategy    29 Problem-Solving Procedure Solving UnitConversion Problems2.72.82.9Solving Multistep Unit Conversion ProblemsUnits Raised to a PowerChemistry and Health  Drug DosageDensity 3031333436Calculating Density    36Density as a Conversion Factor    37Chemistry and Health  Density,Cholesterol, and Heart Disease392.10 Numerical Problem-Solving Strategiesand the Solution Map Problem-Solving Procedure SolvingNumerical Problems27Chapter in reviewKey TermsExercises39 40414747 viiTro IC5 FM i-xxxv v4.0.1.indd 712/11/13 1:04 PM

viii      Contents3.12 Energy and Heat Capacity CalculationsChapter in reviewKey TermsExercises4Atoms andElements4.14.24.34.44.54.64.74.83Matter andEnergy3.13.23.33.43.53.6In Your RoomWhat Is Matter?Classifying Matter According to Its State:Solid, Liquid, and GasClassifying Matter According to ItsComposition: Elements, Compounds,and MixturesDifferences in Matter: Physical andChemical PropertiesChanges in Matter: Physical andChemical Changes4.956575759606365Conservation of Mass: There Is No New Matter 67Energy68Chemistry in the Environment  Getting Energy out of Nothing?69Key TermsExercises5Molecules andCompoundsMolecules and Atoms3.11 Temperature Changes: Heat CapacityEveryday Chemistry  Coolers, Camping,and the Heat Capacity of WaterTro IC5 FM i-xxxv v4.0.1.indd 87799100101104108Sugar and SaltCompounds Display Constant CompositionChemical Formulas: How to 4A Molecular View of Elements and Compounds 1355.5Writing Formulas for Ionic Compounds71727695969797Polyatomic Ions in Chemical Formulas    133Types of Chemical Formulas    134Units of Energy    693.9 Energy and Chemical and Physical Change3.10 Temperature: Random Motion ofIsotopes: When the Number ofNeutrons VariesAtomic Mass: The Average Mass ofan Element’s AtomsChemistry in the Environment  Chapter in review5.15.25.394Ions and the Periodic Table    109Radioactive Isotopes at Hanford, WashingtonSeparating Mixtures Through Physical Changes    673.73.8Experiencing Atoms at TiburonIndivisible: The Atomic TheoryEveryday Chemistry  Atoms and HumansThe Nuclear AtomThe Properties of Protons, Neutrons,and ElectronsEveryday Chemistry  Solid Matter?Elements: Defined by Their Numbersof ProtonsLooking for Patterns: The Periodic Lawand the Periodic TableIons: Losing and Gaining Electrons77818686Atomic Elements    135Molecular Elements    135Molecular Compounds    135Ionic Compounds    136138Writing Formulas for Ionic Compounds ContainingOnly Monoatomic Ions    138 Problem-Solving Procedure Writing Formulasfor Ionic Compounds 13812/11/13 1:04 PM

Contents        ixWriting Formulas for Ionic Compounds Containing139Polyatomic Ions    5.65.75.85.9Nomenclature: Naming CompoundsNaming Ionic Compounds140140Naming Binary Ionic Compounds Containing aMetal That Forms Only One Type of Cation    141Naming Binary Ionic Compounds Containing a MetalThat Forms More Than One Type of Cation    142Naming Ionic Compounds Containing aPolyatomic Ion    143Everyday Chemistry  Polyatomic Ions144Naming Molecular CompoundsNaming Acids145146Naming Binary Acids    146Naming Oxyacids    147Chemistry in the Environment  Acid Rain5.10 Nomenclature Summary148148Ionic Compounds    149Molecular Compounds    149Acids    1495.11 Formula Mass: The Mass of a Moleculeor Formula UnitChapter in reviewKey .16.26.31671681696.46.5How Much Sodium?Counting Nails by the PoundCounting Atoms by the GramConverting between Moles andNumber of Atoms    169Converting between Grams and Molesof an Element    170Converting between Grams of an Element andNumber of Atoms    173Counting Molecules by the GramChemical Formulas as Conversion FactorsMass Percent Composition of CompoundsMass Percent Composition from aChemical FormulaTro IC5 FM i-xxxv v4.0.1.indd 96.86.9Calculating an Empirical Formula fromExperimental Data    186 Problem-Solving Procedure Obtaining anEmpirical Formula from Experimental Data 187Calculating Molecular Formulas forCompoundsKey TermsExercises188190196196174177Converting between Grams of a Compound and Molesof a Constituent Element    178Converting between Grams of a Compound andGrams of a Constituent Element    179Chlorine in Chlorofluorocarbons185Calculating Empirical Formulas for Compounds 185Chapter in reviewConverting between Grams and Molesof a Compound    174Converting between Grams of a Compound andNumber of Molecules    176Chemistry in the Environment  6.66.7Chemistry and Health  Fluoridation ofDrinking de School Volcanoes, Automobiles, andLaundry DetergentsEvidence of a Chemical ReactionThe Chemical EquationHow to Write Balanced Chemical Equations205206209211 Problem-Solving Procedure Writing BalancedChemical Equations21212/11/13 1:04 PM

x      Contents7.5Aqueous Solutions and Solubility:Compounds Dissolved in Water214Solubility    2157.67.77.87.9Precipitation Reactions: Reactions in AqueousSolution That Form a Solid218Predicting Precipitation Reactions    218 Problem-Solving Procedure Writing Equationsfor Precipitation Reactions220Writing Chemical Equations for Reactionsin Solution: Molecular, Complete Ionic, andNet Ionic EquationsAcid–Base and Gas Evolution Reactions221223Acid–Base (Neutralization) Reactions    223Gas Evolution Reactions    224Chemistry and Health  NeutralizingExcess Stomach AcidOxidation–Reduction Reactions226226Combustion Reactions    2277.10 Classifying Chemical Reactions228Classifying Chemical Reactions byWhat Atoms Do    229Classification Flowchart    231Chemistry in the Environment  The Reactions Involved in Ozone DepletionChapter in reviewKey TermsExercises8Quantities inChemical te Change: Too Much Carbon Dioxide249Making Pancakes: Relationships betweenIngredients250Making Molecules: Mole-to-Mole Conversions 251Making Molecules: Mass-to-Mass Conversions 253Chemistry in the Media  The Controversyover Oxygenated Fuels254More Pancakes: Limiting Reactant,Theoretical Yield, and Percent Yield257Limiting Reactant, Theoretical Yield, andPercent Yield from Initial Masses of Reactants 260Enthalpy: A Measure of the Heat Evolvedor Absorbed in a Reaction264Everyday Chemistry  Bunsen Burners2659Electrons in Atoms andthe Periodic Table2849.19.29.3285286288Treatment for Cancer9.49.5Key TermsExercisesTro IC5 FM i-xxxv v4.0.1.indd 10268272273The Bohr Model: Atoms with OrbitsThe Quantum-Mechanical Model: Atomswith Orbitals290291294Baseball Paths and Electron Probability Maps    294From Orbits to Orbitals    2959.6Quantum-Mechanical Orbitals and Electron Configurations295Quantum-Mechanical Orbitals    296Electron Configurations: How ElectronsOccupy Orbitals    298Sign of Hrxn    265Stoichiometry of Hrxn    266Chapter in reviewBlimps, Balloons, and Models of the AtomLight: Electromagnetic RadiationThe Electromagnetic SpectrumChemistry and Health  Radiation9.79.8Electron Configurations and the Periodic Table 302The Explanatory Power of the Quantum- Mechanical Model30512/11/13 1:04 PM

Contents        xi9.9Periodic Trends: Atomic Size, IonizationEnergy, and Metallic Character307Atomic Size    307Chemistry and Health  Pumping Ions:Atomic Size and Nerve ImpulsesIonization Energy    309Metallic Character    311Chapter in reviewKey TermsExercises10ChemicalBonding30931331631632410.1 Bonding Models and AIDS Drugs32510.2 Representing Valence Electrons with Dots32610.3 Lewis Structures of Ionic Compounds: ElectronsTransferred10.4 Covalent Lewis Structures: Electrons Shared327328Double and Triple Bonds    32910.5 Writing Lewis Structures for CovalentCompounds330 Problem-Solving Procedure Writing LewisStructures for Covalent Compounds 331Writing Lewis Structures for Polyatomic Ions    332Exceptions to the Octet Rule    33310.6 Resonance: Equivalent Lewis Structuresfor the Same Molecule10.7 Predicting the Shapes of MoleculesChemistry in the Environment The Lewis Structure of Ozone11.3 Pressure: The Result of Constant334335336 Problem-Solving Procedure PredictingGeometry Using VSEPR Theory339Representing Molecular Geometries on Paper    339Chemistry and Health  Fooled byMolecular Shape34010.8 Electronegativity and Polarity: Why Oiland Water Don’t MixElectronegativity    341Polar Bonds and Polar Molecules    343Everyday Chemistry  How Soap WorksChapter in reviewKey TermsExercises11345346349349362Pressure Units    363Pressure Unit Conversion    36411.4 Boyle’s Law: Pressure and VolumeEveryday Chemistry  Airplane CabinPressurization11.511.611.711.8Everyday Chemistry  Extra-long SnorkelsCharles’s Law: Volume and TemperatureThe Combined Gas Law: Pressure, Volume,and TemperatureAvogadro’s Law: Volume and MolesThe Ideal Gas Law: Pressure, Volume,Temperature, and Moles365366370371375377379Molar Mass of a Gas from the Ideal Gas Law    38311.9 Mixtures of Gases: Why Deep-Sea DiversBreathe a Mixture of Helium and Oxygen385Deep-Sea Diving and Partial Pressure    387Collecting Gases over Water    38811.10 Gases in Chemical Reactions389Molar Volume at Standard Temperatureand Pressure    392Gases11.1 Extra-Long Straws11.2 Kinetic Molecular Theory: A Model for GasesTro IC5 FM i-xxxv v4.0.1.indd 11341Molecular CollisionsChemistry in the Environment  358Air PollutionChapter in review359360Key TermsExercises39439540040012/11/13 1:04 PM

xii      ContentsDipole–Dipole Force    426Hydrogen Bonding    428429Ion–Dipole Force    Chemistry and Health  HydrogenBonding in DNA12.7 Types of Crystalline Solids: Molecular,Ionic, and Atomic430432Molecular Solids    432Ionic Solids    433Atomic Solids    43312.8 Water: A Remarkable MoleculeChemistry in the Environment  Water PollutionChapter in reviewKey TermsExercises13Solutions13.1 Tragedy in Cameroon13.2 Solutions: Homogeneous Mixtures13.3 Solutions of Solids Dissolved in Water:How to Make Rock Candy434435436440440446447448449Solubility and Saturation    450Electrolyte Solutions: Dissolved Ionic Solids    451How Solubility Varies with Temperature    452Rock Candy    452Liquids, Solids,and IntermolecularForces1212.1 Interactions between Molecules12.2 Properties of Liquids and Solids12.3 Intermolecular Forces in Action: SurfaceTension and Viscosity13.4 Solutions of Gases in Water: How SodaPop Gets Its Fizz13.5 Specifying Solution Concentration:Mass Percent410411412413Surface Tension    414Viscosity    414Everyday Chemistry  Why Are WaterDrops Spherical?12.4 Evaporation and Condensation415415Boiling    417Energetics of Evaporation and Condensation    418Heat of Vaporization    41912.5 Melting, Freezing, and Sublimation420Energetics of Melting and Freezing    421Heat of Fusion    421Sublimation    423Dipole–Dipole, Hydrogen Bonding, andIon–DipoleDispersion Force    425Tro IC5 FM i-xxxv v4.0.1.indd 1213.6 Specifying Solution Concentration: MolarityChemistry in the Environment  The Dirty DozenUsing Molarity in Calculations    459Ion Concentrations    46113.7 Solution Dilution13.8 Solution Stoichiometry13.9 Freezing Point Depression and BoilingPoint Elevation: Making Water FreezeColder and Boil HotterFreezing Point Depression    466Everyday Chemistry  Antifreeze in FrogsBoiling Point Elevation    46813.10 Osmosis: Why Drinking Salt Waterin MedicineChapter in review425454Mass Percent    454Using Mass Percent in Calculations    455Causes DehydrationChemistry and Health  Solutions12.6 Types of Intermolecular Forces: Dispersion,452Key 11/13 1:05 PM

Contents        xiii Calculating pH from [H3O ]    508Calculating [H3O ] from pH    509The pOH Scale    51014.10 Buffers: Solutions That Resist pH ChangeChemistry and Health  AlkaloidsChemistry and Health  The Danger ofAntifreezeChapter in reviewKey ium52815.1 Life: Controlled Disequilibrium15.2 The Rate of a Chemical Reaction52953015.3 The Idea of Dynamic Chemical Equilibrium15.4 The Equilibrium Constant: A Measure of534Collision Theory    530How Concentration Affects the Rate of a Reaction    532How Temperature Affects the Rate of a Reaction      533How Far a Reaction Goes1414.114.214.314.415.5 Heterogeneous Equilibria: The EquilibriumAcids and Bases486Sour Patch Kids and International Spy MoviesAcids: Properties and ExamplesBases: Properties and ExamplesMolecular Definitions of Acids and Bases487488489490The Arrhenius Definition    490The Brønsted–Lowry Definition    49114.5 Reactions of Acids and BasesNeutralization Reactions    493Acid Reactions    494Everyday Chemistry  What Is inMy Antacid?Base Reactions    49614.6 Acid–Base Titration: A Way to Quantify theAmount of Acid or Base in a Solution14.7 Strong and Weak Acids and Bases493496496499Strong Acids    499Weak Acids    500Strong Bases    503Weak Bases    50314.8 Water: Acid and Base in One14.9 The pH and pOH Scales: Ways toExpress Acidity and BasicityTro IC5 FM i-xxxv v4.0.1.indd 13537Writing Equilibrium Constant Expressions forChemical Reactions    537The Significance of the Equilibrium Constant    538Expression for Reactions Involving a Solidor a Liquid15.6 Calculating and Using Equilibrium Constants540541Calculating Equilibrium Constants    541Using Equilibrium Constants in Calculations    54315.7 Disturbing a Reaction at Equilibrium:Le Châtelier’s Principle54415.8 The Effect of a Concentration Changeon Equilibrium54615.9 The Effect of a Volume Change on Equilibrium 548Chemistry and Health  How aDeveloping Fetus Gets Oxygen from Its Mother55015.10 The Effect of a Temperature Changeon Equilibrium55115.11 The Solubility-Product Constant553Using Ksp to Determine Molar Solubility    554Everyday Chemistry  Hard Water15.12 The Path of a Reaction and the Effectof a Catalyst555556How Activation Energies Affect Reaction Rates    556Catalysts Lower the Activation Energy    558Enzymes: Biological Catalysts    559504Chapter in reviewKey Terms507Exercises56056456412/11/13 1:05 PM

xiv      Contents16Oxidation andReduction57416.1 The End of the Internal Combustion Engine?16.2 Ox

vii Contents Preface xviii 1 The Chemical World 2 1.1 Soda Pop Fizz 3 1.2 Chemicals Compose Ordinary Things 5 1.3 All Things Are Made of Atoms and Molecules 5 1.4 The Scientific Method: How Chemists Think 6 EvEryday ChEmistry Combustion and the Scientific Method 8 1.5 A Beginning Chemist: How to Succeed 8 CHAPTER IN REvIEw 9 KEy TERMS 10 ExERCISES 10 2 Measurement and

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