普通化學

We continue to be pleased that the previous editions of the text have been wellreceived. In response to comments from users, and interactions with studentsusing the text, however, we have made some changes for the ninth edition.
• The Chapter Introductions were rewritten and now include student learningobjectives. These learning objectives will help focus the students onwhat they should know and be able to do as they read each chapter andwork through the end-of-chapter problems.
• A new boxed feature, titled "A Closer Look," has been added to three of thechapters. We have written these based on student misconceptions and difficultywith particular topics.
• In Chapter 7, we have a discussion of Kw for the autoionization of water,emphasizing that it is in actuality both the K, and Kb value for water.
• We discuss in more depth in Chapter 11 why a standard reductionpotential is an intensive property and why we must balance the electronsin a c;ell in order to simply be able to add half-cell potentialswithout multiplying by a coefficient.
• In Chapter 15, we discuss the steady-state approximation in moredetail, showing how the form of the overall rate law developed is independentof how we define rate.
• We have added new Marathon Problems to 17 of the chapters. These problemsare particularly challenging and are designed to elicit discussion amongthe students. Unlike the Discussion Questions, which work well to introducetopics, these are meant to be capstone problems to test the students in theirabilities to integrate many of the topics in the chapter and utilize the problem-solving approach we have emphasized throughout the textbook.
• Chemical Insights boxes, which showcase various applications and topicsand their relationship to the field of chemistry, have been updated. Thesetopics can be springboards to class discussions and student papers.
• New end-of-chapter questions and proble'ms have been added throughoutthe text.
• Homework assignments powered by Cengage's WebAssign have been intentionallydesigned, are easily customizable, and contain features like step-bystepvideo problem walk-throughs and targeted feedback for problem sets.
• The art program has-been modified and updated as needed.

●The text teaches students to think like chemists, emphasizing creative problem solving and applying mathematical skills to go beyond simple algorithms.
●Assignments in WebAssign help students master core concepts and understand their mistakes with textbook problems, answer-specific feedback, solution videos and more.
●Skill-building ChemWork problems — available in WebAssign — support students through the problem-solving process with guidance similar to what an instructor might offer in office hours.
●Marathon problems, designed to challenge students, are the capstone of each chapter. They ask students to reason through complex problems and elicit class discussion.
●Chemical Insights appearing throughout the text make chemistry relevant to students with applications including superconductivity, laser cooling, nanogenerators and more.
●A unique organization leverages students’ math skills to explore acid-base equilibria early in the course. Chapters are flexible so instructors can organize the course in a variety of ways to meet student needs.
●The text includes discussions of the exact treatment of buffered solutions (Chapter 8), adiabatic processes (Chapter 10), the mathematics involved in relating the number of microstates to the concept of entropy (Chapter 10), and molecular, rotational, vibrational, electronic, and nuclear magnetic spectroscopy (Chapter 14). These sections provide more depth at a slightly more rigorous level, consistent with the book’s overall focus.
●Chemical Insights Boxes. Chemistry comes to life with these inspiring boxes, which cover various applications related to the field of chemistry. Topics include superconductivity, laser cooling, fracking, gorilla glass, nanogenerators, and more.

Steve Zumdahl is the author of market-leading textbooks in introductory chemistry, general chemistry, honors-level chemistry, and high school chemistry. Recently retired from his long-time position as Director of Undergraduate Programs at the University of Illinois, he has received numerous awards for his contributions to chemical education. These include the National Catalyst Award in recognition of his contribution to chemical education, the University of Illinois Teaching Award, the UIUC Liberal Arts and Sciences Advising Award, and the School of Chemical Sciences Teaching Award (five times). He earned his B.S. in Chemistry from Wheaton College (IL), and his Ph.D. from the University of Illinois.

Donald J. DeCoste is Associate Director of General Chemistry at the University of Illinois, Urbana–Champaign and has been teaching chemistry at the high school and college levels for 26 years. He earned his BS in Chemistry and PhD from the University of Illinois, Urbana–Champaign. At UIUC he has developed chemistry courses for nonscience majors, preservice secondary teachers, and preservice elementary teachers. He teaches courses in introductory chemistry and the teaching of chemistry and has received the School of Chemical Sciences Teaching Award four times. Don has led workshops for secondary teachers and graduate student teaching assistants, discussing the methods and benefits of getting students more actively involved in class. When not involved in teaching and advising, Don enjoys spending time with his wife and three children.

1. Chemists and Chemistry.
2. Atoms, Molecules, and Ions.
3. Stoichiometry.
4. Types of Chemical Reactions and Solution Stoichiometry.
5. Gases.
6. Chemical Equilibrium.
7. Acids and Bases.
8. Applications of Aqueous Equilibria.
9. Energy, Enthalpy, and Thermochemistry.
10. Spontaneity, Entropy, and Free Energy.
11. Electrochemistry.
12. Quantum Mechanics and Atomic Theory.
13. Bonding: General Concepts.
14. Covalent Bonding: Orbitals.
15. Chemical Kinetics.
16. Liquids and Solids.
17. Properties of Solutions.
18. The Representative Elements.
19. Transition Metals and Coordination Chemistry.
20. The Nucleus: A Chemist’s View.
21. Organic and Biochemical Molecules.
Appendix 1 Mathematical Procedures.
Appendix 2 Units of Measurement and Conversions Among Units.
Appendix 3 Spectral Analysis
Appendix 4 Selected Thermodynamic Data
Appendix 5 Equilibrium Constantsand Reduction Potentials
Appendix 6 Deriving the Integrated Rate Laws