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This Eleventh Edition of CHEMICAL PRINCIPLES IN THE LABORATORY maintains the high-quality, time-tested experiments and techniques that have made it a perennial bestseller. Continuing to offer complete coverage of basic chemistry principles, the authors present topics in a direct, easy-to-understand manner. This edition remains committed to green chemistry with four additional experiments made "greener" by reducing volume and toxicity, which not only benefits the environment, but also reduces the cost of the experiments overall.
- ENHANCED EXPERIMENTS: All experiments have been edited to improve the clarity of the instructions and explanations. Careful attention to the scientific units, terminology, and symbology ensures greater consistency with most general chemistry texts. In addition, formal data pages have been added to Experiments 15 and 19.
- NEW ADVANCE STUDY ASSIGNMENTS: Most Advance Study Assignment questions, particularly those with numerical answers, have been changed.
- NEW PROTOCOL: The protocol of Experiment 7, Analysis of an Unknown Chloride, now includes not only instructions for the Fajans method with dichlorofluoroscein as an adsorption indicator using diffuse or reflected light, but also instructions for using regular ambient laboratory lighting taking certain precautions.
- REDUCED USE OF TOXIC CHEMICALS AND STRONG ACIDS: To accomplish the same chemistry more safely, sodium sulfate replaces sulfuric acid in Experiment 12, The Alkaline Earths and the Halogens. In addition, Experiment 37, Qualitative Analysis of Group II Cations, now uses the organic compound Janus Green as a substitute for mercury(II) chloride to demonstrate the strong reductive capacity of tin(II). With the exception of Experiment 36, Qualitative Analysis of Group I Cations--still included for institutions that want to give their students hands-on experience with the classic separation and identification steps for silver, lead, and mercury(I)—the Eleventh Edition is “mercury-free.”
- NEW INTRODUCTION TO EXPERIMENT 38: To provide the basis of the confirmatory test for aluminum in Experiment 38, Qualitative Analysis of Group III Cations, the authors have added an introductory section that includes background information on the establishment of the stoichiometry of the aluminum-catechol violet complex as 1:1 in an IB chemistry project carried out by Kendra Pankow, granddaughter of WCW.
- APPROPRIATE HEATING BY BUNSON BURNER OR HOT PLATE: Directions for several experiments have been re-written to be agnostic to the use of either hot plates or Bunsen burners in the heating steps. Because Experiment 9, Molar Mass of a Volatile Liquid, poses a potential fire hazard when conducted with Bunsen burners, directions have been re-written to assume this to be the case. Other experiments which necessitate the use of high temperatures, such as those involving the heating of crucibles, or support of combustion tests, remain designed around the use of Bunsen burners.
- REVISED SECTIONS ON ELECTROCHEMISTRY: A number of sections have been revised to make the terminology more precise and to allude to the complexities involved in quantitative electrochemical measurements without making the discussion too difficult to follow.
- ENHANCED ONLINE LEARNING: The most powerful online learning solution for chemistry is better than ever. OWLv2 now has more flexible student and instructor functionality, new personalized study tools, enhanced integration with learning management systems, and improved analytics. For this course, OWLv2 also includes the new OWLv2 course with MindTap, which includes assignable pre-lab exercises from the Advanced Study Assignments integrated with LabSkills Safety and Techniques videos that feature 12 new and 20 revised videos.
- FLEXIBILITY: Labs are easily modified for use as guided inquiry. Each lab gives students a starting point and the information they need to create and conduct the experiment.
- EXCEL COVERAGE: A section explains how students can use Excel to simplify making calculations, while an appendix describes how to use Excel software in making calculations in several experiments.
- A PROVEN APPROACH: The direct approach of this laboratory manual has made it a household name in the General Chemistry laboratory market. Each edition's fully tested experiments are consistently updated to maintain the integrity of this bestselling lab manual.
- STUDENT-FRIENDLY: Offering complete coverage of basic chemistry principles, this manual presents topics clearly in an easy-to-understand manner, while requiring students to read and demonstrate understanding of the material.
- ADVANCE STUDY ASSIGNMENTS (ASAs): These assignments include sample questions, usually involving calculations, that are similar to those required in processing the data obtained in each experiment. Students who complete the ASAs prior to coming to lab should have no trouble working up the data they actually observe in the lab session. These questions are revised in every edition, especially those containing numerical values.
- OWLv2 INTEGRATION: Featuring chemist-developed content, OWLv2 is the most trusted online learning solution for chemistry. With detailed, instant feedback and interactive learning resources, students get the help they need when they need it. Now with improved student and instructor tools and greater functionality, OWLv2 is more robust than ever. Discover the power of OWLv2 and take learning to a higher level.
2. Resolution of Matter into Pure Substances, I. Paper Chromatography.
3. Resolution of Matter into Pure Substances, II. Fractional Crystallization.
4. Determination of a Chemical Formula.
5. Identification of a Compound by Mass Relationships.
6. Properties of Hydrates.
7. Analysis of an Unknown Chloride.
8. Verifying the Absolute Zero of Temperature—Determination of the Atmospheric Pressure.
9. Molar Mass of a Volatile Liquid.
10. Analysis of an Aluminum-Zinc Alloy.
11. The Atomic Spectrum of Hydrogen.
12. The Alkaline Earths and the Halogens—Two Families in the Periodic Table.
13. The Geometrical Structure of Molecules—An Experiment Using Molecular Models.
14. Heat Effects and Calorimetry.
15. The Vapor Pressure and Heat of Vaporization of a Liquid.
16. The Structure of Crystals—An Experiment Using Models.
17. Classification of Chemical Substances.
18. Some Nonmetals and Their Compounds—Preparations and Properties.
19. Molar Mass Determination by Depression of the Freezing Point.
20. Rates of Chemical Reactions, I. The Iodination of Acetone.
21. Rates of Chemical Reactions, II. A Clock Reaction.
22. Properties of Systems in Chemical Equilibrium—Le Châtelier's Principle.
23. Determination of the Equilibrium Constant for a Chemical Reaction.
24. The Standardization of a Basic Solution and the Determination of the Molar Mass of an Acid.
25. pH Measurements—Buffers and Their Properties.
26. Determination of the Solubility Product of Ba(IO3)2.
27. Relative Stabilities of Complex Ions and Precipitates Prepared from Solutions of Copper(II).
28. Determination of the Hardness of Water.
29. Synthesis and Analysis of a Coordination Compound.
30. Determination of Iron by Reaction with Permanganate—A Redox Titration.
31. Determination of an Equivalent Mass by Electrolysis.
32. Voltaic Cell Measurements.
33. Preparation of Copper(I) Chloride.
34. Development of a Scheme for Qualitative Analysis.
35. Spot Tests for Some Common Anions.
36. Qualitative Analysis of Group I Cations.
37. Qualitative Analysis of Group II Cations.
38. Qualitative Analysis of Group III Cations.
39. Identification of a Pure Ionic Solid.
40. The Ten Test Tube Mystery.
41. Preparation of Aspirin.
42. Rate Studies on the Decomposition of Aspirin.
43. Analysis for Vitamin C.
Appendix I: Vapor Pressure and Density of Liquid Water.
Appendix II: Summary of Solubility Properties of Ions and Solids.
Appendix IIA: Some Properties of the Cations in Groups I, II, and III.
Appendix III: Shared Atomic Weights of the Elements (Scaled Relative to Carbon-12 = 12 g/mol).
Appendix IV: Making Measurements—Laboratory Techniques.
Appendix V: Mathematical Considerations—Making Graphs.
Appendix VI: Suggested Locker Equipment.
Appendix VII: Introduction to Excel.
Appendix VIII: Statistical Treatment of Laboratory Data.
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