Chemistry 161  Final Exam Study Guide

Instructor: Ken Marr
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Final Exam.  Bring a Scantron card as the exam will be part multiple choice and part short answer/essay. The final exam is comprehensive, covering chapters 1-6 and all labs performed during the quarter. However, about half of the questions will be on material covered since exam 2 (i.e. chapters 5-6). If it helps your grade, your lowest exam score will be replaced with the percentage that you earn on the final exam. 

Bring the following with you to the final exam:

  1. Scantron card, #2 pencil, a good eraser, 3x5 inch "cheat sheet" (optional), calculator with the memory cleared.

  2. Lab 9 (Hess's Law) Lab Report (included in your portfolio)

  3. Portfolio Containing all ALE's for chapters 5 and 6:  Click Here for a Portfolio #3 Contents Sheet.  Be sure to make corrections to all ALE questions before turning in your portfolio at the start of the final exam. Answer Keys have been posted to assist you in finding your errors. Place a "check" next to all correct answers on each ALE and make corrections as needed, either on separate paper attached to each ALE, or clearly highlighted in another color of pen or pencil directly on each ALE---do not copy answers from the answer key: this is plagiarism, moreover, no learning will occur. Get help with those questions you don't understand. Sources of help include:

    • Your instructor, 

    • your teammates/classmates, 

    • Chem tutors in the  help center located upstairs at the south end of the GRCC Holman Library.

In preparation for the final exam you should be sure to review the following:

  1. Chapters 1-6, all homework problems, quizzes, exams and lab activities.

  2. Here are some good multiple choice Interactive Quiz Questions for all chapters from the Silberberg Online Learning Center:  Go to http://highered.mcgraw-hill.com/sites/0072396814/student_view0/ and then select from the pull-down menu on the left the chapter you are interested in and then select either one of the two "Interactive Quizzes" for practice. These questions are intended to help you identify areas of strength and areas where further review is needed. Since the Chem 162 final exam will be a combination of multiple choice questions and short answer/essay questions it will behoove you to get some practice with multiple choice questions!

  3. Check out these Practice Problems. The practice problems concentrate on the material/concepts covered since exam 2 (i.e. chapters 5 and 6); Answers to these Problems 

  4. Click here for more practice problems that cover some of the material from chapters 1-6. Answers to these Problems

  5. Click here for even more practice problems, practice tests (with annotated answers) and much more! Once at the website, check out the practice tests (with annotated answers) next to "Test Prep" for chapters 1 - 6 and 12.  These chapters are from another book, but cover nearly the same concepts as in chapters 1 - 6 in our textbook by Silberberg.

Specific terms, concepts and skills to concentrate on when studying for the final exam:

  • Understand These Concepts. Chapter 5: 1-9, 12-13 on page 213; Chapter 6: 1-13 on page 248

  • Master These Skills. Chapter 5:  1-7 on page 214;   Chapter 6: 1-6 on page 248.

  1. Terms/Concepts
    1. Units of pressure in “mm Hg”, “torr” and “atm”
    2. Standard temperature and pressure, STP
    3. Molar volume, 22.4 L/mole, at STP
    4. Gas constant, R, with units of “L•atm/mole•K”
    5. The relationship between temperature, average kinetic energy, and the average velocity of gas particles
    6. The relationship between enthalpy changes, DH, and energy changes, DE, in chemical reactions
    7. Exothermic and endothermic
    8. The sign convention (±) for exothermic and endothermic reactions
    9. Standard heats of formation, DHf°
  2. Skills/Background Knowledge
    1. Boyle’s Law
    2. Charles’ Law
    3. Avogadro’s Law
    4. The Ideal Gas Equation, PV = nRT
    5. The Ideal Gas Model
    6. Deviations from the Ideal Gas Model, and the meaning of van der Waal’s constants “a” & “b”
    7. Dalton’s Law of Partial Pressures
  3. Problem solving abilities
    1. Calculations using the Ideal Gas Equation
    2. Calculations using the equation P1V1/ n1T1 = P2V2/ n2T2
    3. Calculations involving the density of gases
    4. Stoichiometric calculations that involve gases
    5. Use Hess’s Law to combine reaction equations to derive a new equation
    6. Calculation of DHrxn from DHf° values
    7. Draw a reaction coordinate (enthalpy) diagram illustrating Hess’s Law, when given the relevant DHrxn values

© Kenneth R. Marr 2001